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NEET UG 2022 Category

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- 1 Answered
- 2 Marked
- 3 Not Answered
- 4 Not Visited

A roller coaster is designed such that ridersexperience “weightlessness” as they go round the topof a hill whose radius of curvature is 20 m. The speed of the car at the top of the hill is between?

A roller coaster is designed such that ridersexperience “weightlessness” as they go round the topof a hill whose radius of curvature is 20 m. The speed of the car at the top of the hill is between?

4 Mark(s)

A car is moving in a circular horizontal track of radius 10 m with a constant speed of 10 m/s. A bob is suspended from the roof of the car by a light wire of length 1.0 m. The angle made by the wire with the

vertical is?

A car is moving in a circular horizontal track of radius 10 m with a constant speed of 10 m/s. A bob is suspended from the roof of the car by a light wire of length 1.0 m. The angle made by the wire with the

vertical is?

4 Mark(s)

A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth surface and fires 10 shots horizontally, in 5 s. Each bullet has a mass of 10 g with a muzzle velocity of 800 \(ms^{-1}\). The final velocity acquired by the person and the average force exerted on the person are ?

A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth surface and fires 10 shots horizontally, in 5 s. Each bullet has a mass of 10 g with a muzzle velocity of 800 \(ms^{-1}\). The final velocity acquired by the person and the average force exerted on the person are ?

4 Mark(s)

A car is negotiating a curved road of radius R. The road is banked at an angle \(\theta\) The coefficient of friction between the tyres of the car and the road is ms. The maximum safe velocity on this road is ?

A car is negotiating a curved road of radius R. The road is banked at an angle \(\theta\) The coefficient of friction between the tyres of the car and the road is ms. The maximum safe velocity on this road is ?

4 Mark(s)

A tube of length L is filled completely with an incompressible liquid of mass M and closed at both the ends. The tube is then rotated in a horizontal plane about one of its ends with a uniform angular

velocity w. The force exerted by the liquid at the other end is?

A tube of length L is filled completely with an incompressible liquid of mass M and closed at both the ends. The tube is then rotated in a horizontal plane about one of its ends with a uniform angular

velocity w. The force exerted by the liquid at the other end is?

4 Mark(s)

An object of mass 3 kg is at rest. Now a force of \(\overrightarrow{F}\)=\(6t^2\hat{i}+4t\hat{j}\) is applied on the object then velocity of object at t = 3 s is?

An object of mass 3 kg is at rest. Now a force of \(\overrightarrow{F}\)=\(6t^2\hat{i}+4t\hat{j}\) is applied on the object then velocity of object at t = 3 s is?

4 Mark(s)

A 0.5 kg ball moving with a speed of 12 m/s strikes a hard wall at an angle of 30° with the wall. It is reflected with the same speed at the same angle. If the ball is in contact with the wall for 0.25 seconds, the average force acting on the wall is ?

A 0.5 kg ball moving with a speed of 12 m/s strikes a hard wall at an angle of 30° with the wall. It is reflected with the same speed at the same angle. If the ball is in contact with the wall for 0.25 seconds, the average force acting on the wall is ?

4 Mark(s)

A plank with a box on it at one end is gradually raised about the other end. As the angle of inclination with the horizontal reaches 30°, the box starts to slip and slides 4.0 m down the plank in 4.0 s. The coefficients of static and kinetic friction between the box and the plank will be, respectively?

A plank with a box on it at one end is gradually raised about the other end. As the angle of inclination with the horizontal reaches 30°, the box starts to slip and slides 4.0 m down the plank in 4.0 s. The coefficients of static and kinetic friction between the box and the plank will be, respectively?

4 Mark(s)

A 1 kg stationary bomb is exploded in three parts having mass 1 : 1 : 3 respectively. Parts having same mass move in perpendicular direction with velocity 30 m/s, then the velocity of bigger part will be ?

A 1 kg stationary bomb is exploded in three parts having mass 1 : 1 : 3 respectively. Parts having same mass move in perpendicular direction with velocity 30 m/s, then the velocity of bigger part will be ?

4 Mark(s)

A mass of 1 kg is thrown up with a velocity of100 m/s. After 5 seconds, it explodes into two parts. One part of mass 400 g comes down with a velocity 25 m/s. The velocity of other part is \((tack g=10 \ ms^{-2}) \)?

A mass of 1 kg is thrown up with a velocity of100 m/s. After 5 seconds, it explodes into two parts. One part of mass 400 g comes down with a velocity 25 m/s. The velocity of other part is \((tack g=10 \ ms^{-2}) \)?

4 Mark(s)

A person of mass 60 kg is inside a lift of mass 940 kg and presses the button on control panel. The lift starts moving upwards with an acceleration 1.0 m/s2. If g = 10 m s–2, the tension in the supporting cable is ?

A person of mass 60 kg is inside a lift of mass 940 kg and presses the button on control panel. The lift starts moving upwards with an acceleration 1.0 m/s2. If g = 10 m s–2, the tension in the supporting cable is ?

4 Mark(s)

An object flying in air with velocity \((20 \hat{i} + \ 25 \hat{j}- \ 12 \hat{k})\) suddenly breaks in two pieces whose masses are in the ratio 1 : 5. The smaller mass flies off with a velocity \((100 \hat{i} + \ 35 \hat{j}+ \ 8 \hat{k})\) The velocity of the larger piece will be ?

An object flying in air with velocity \((20 \hat{i} + \ 25 \hat{j}- \ 12 \hat{k})\) suddenly breaks in two pieces whose masses are in the ratio 1 : 5. The smaller mass flies off with a velocity \((100 \hat{i} + \ 35 \hat{j}+ \ 8 \hat{k})\) The velocity of the larger piece will be ?

4 Mark(s)

A car of mass 1000 kg negotiates a banked curve of radius 90 m on a frictionless road. If the banking angle is 45°, the speed of the car is?

A car of mass 1000 kg negotiates a banked curve of radius 90 m on a frictionless road. If the banking angle is 45°, the speed of the car is?

4 Mark(s)

A ball of mass 0.25 kg attached to the end of a string of length 1.96 m is moving in a horizontal circle. The string will break if the tension is more than 25 N.What is the maximum speed with which the ball can

be moved ?

A ball of mass 0.25 kg attached to the end of a string of length 1.96 m is moving in a horizontal circle. The string will break if the tension is more than 25 N.What is the maximum speed with which the ball can

be moved ?

4 Mark(s)

A body of mass 3 kg hits a wall at an angle of 60° and returns at the same angle. The impact time was 0.2 s. The force exerted on the wall ?

A body of mass 3 kg hits a wall at an angle of 60° and returns at the same angle. The impact time was 0.2 s. The force exerted on the wall ?

4 Mark(s)

In a rocket, fuel burns at the rate of 1 kg/s. This fuel is ejected from the rocket with a velocity of 60 km/s. This exerts a force on the rocket equal to ?

In a rocket, fuel burns at the rate of 1 kg/s. This fuel is ejected from the rocket with a velocity of 60 km/s. This exerts a force on the rocket equal to ?

4 Mark(s)

An explosion blows a rock into three parts. Two parts go off at right angles to each other. These two are, 1 kg first part moving with a velocity of 12 \(ms^{-1}\)and 2 kg second part moving with a velocity 8 \(ms^{-1}\). If the third part flies off with a velocity of 4 \(ms^{-1}\), its mass would be ?

An explosion blows a rock into three parts. Two parts go off at right angles to each other. These two are, 1 kg first part moving with a velocity of 12 \(ms^{-1}\)and 2 kg second part moving with a velocity 8 \(ms^{-1}\). If the third part flies off with a velocity of 4 \(ms^{-1}\), its mass would be ?

4 Mark(s)

A stone is dropped from a height h. It hits the ground with a certain momentum P. If the same stone is dropped from a height 100% more than the previous height, the momentum when it hits the ground will change by?

A stone is dropped from a height h. It hits the ground with a certain momentum P. If the same stone is dropped from a height 100% more than the previous height, the momentum when it hits the ground will change by?

4 Mark(s)

A block of mass m is placed on a smooth inclined wedge ABC of inclination \(\theta\) asshown in the figure.The wedge is given an acceleration a towards the right. The relation between a and \(\theta\)

for the block to remain stationary on the wedge is ?

A block of mass m is placed on a smooth inclined wedge ABC of inclination \(\theta\) asshown in the figure.The wedge is given an acceleration a towards the right. The relation between a and \(\theta\)

for the block to remain stationary on the wedge is ?

4 Mark(s)

The force F acting on a particle of mass m is indicated by the force-time graph as shown. The change in momentum of the particle over the time interval from zero to 8 s is?

The force F acting on a particle of mass m is indicated by the force-time graph as shown. The change in momentum of the particle over the time interval from zero to 8 s is?

4 Mark(s)

Physical independence of force is a consequence of?

Physical independence of force is a consequence of?

4 Mark(s)

Consider a car moving along a straight horizontal road with a speed of 72 km/h. If the coefficient of static friction between the tyres and the road is 0.5, the shortest distance in which the car can be stopped is

\((taking \ g=10m/s^{2})\)

Consider a car moving along a straight horizontal road with a speed of 72 km/h. If the coefficient of static friction between the tyres and the road is 0.5, the shortest distance in which the car can be stopped is

\((taking \ g=10m/s^{2})\)

4 Mark(s)

Two bodies of mass 4 kg and 6 kg are tied to the ends of a massless string. The string passes over a pulley which is frictionless (see figure). The acceleration of the system in terms of acceleration due to gravity (g) is ?

Two bodies of mass 4 kg and 6 kg are tied to the ends of a massless string. The string passes over a pulley which is frictionless (see figure). The acceleration of the system in terms of acceleration due to gravity (g) is ?

4 Mark(s)

On the horizontal surface of a truck a block of mass 1 kg is placed \((\mu =.06)\) and truck is moving with acceleration 5 \(m/s^{2}\) then the frictional force on the block will be ?

On the horizontal surface of a truck a block of mass 1 kg is placed \((\mu =.06)\) and truck is moving with acceleration 5 \(m/s^{2}\) then the frictional force on the block will be ?

4 Mark(s)

A gramophone record is revolving with an angular velocity \( \omega\). A coin is placed at a distance r from the centre of the record. The static coefficient of friction is \(\mu \) .The coin will revolve with the record if?

A gramophone record is revolving with an angular velocity \( \omega\). A coin is placed at a distance r from the centre of the record. The static coefficient of friction is \(\mu \) .The coin will revolve with the record if?

4 Mark(s)

A heavy uniform chain lies on horizontal table top. If the coefficient of friction between the chain and the table surface is 0.25, then the maximum fraction of the length of the chain that can hang over one edge of the table is ?

A heavy uniform chain lies on horizontal table top. If the coefficient of friction between the chain and the table surface is 0.25, then the maximum fraction of the length of the chain that can hang over one edge of the table is ?

4 Mark(s)

Sand is being dropped on a conveyer belt at therate of M kg/s. The force necessary to keep the belt moving with a constant velocity of v m/s will be?

Sand is being dropped on a conveyer belt at therate of M kg/s. The force necessary to keep the belt moving with a constant velocity of v m/s will be?

4 Mark(s)

A system consists of three masses m1, m2 and m3connected by a string passing over a pulley P. The mass m1 hangs freely and m2 and m3 are on a rough horizontal table (the coefficient of friction = \(\mu\)). The pulley is frictionless and of negligible mass. The downward acceleration of mass m1 is? (Assume m1 = m2 = m3 = m)

A system consists of three masses m1, m2 and m3connected by a string passing over a pulley P. The mass m1 hangs freely and m2 and m3 are on a rough horizontal table (the coefficient of friction = \(\mu\)). The pulley is frictionless and of negligible mass. The downward acceleration of mass m1 is? (Assume m1 = m2 = m3 = m)

4 Mark(s)

A 600 kg rocket is set for a vertical firing. If the exhaust speed is 1000 \( m \ s^{-1}\) the mass of the gas ejected per second to supply the thrust needed to overcome the weight of rocket is ?

A 600 kg rocket is set for a vertical firing. If the exhaust speed is 1000 \( m \ s^{-1}\) the mass of the gas ejected per second to supply the thrust needed to overcome the weight of rocket is ?

4 Mark(s)

A block of mass 10 kg is in contact against the inner wall of a hollow cylindrical drum of radius 1 m. The coefficient of friction between the block and the inner wall of the cylinder is 0.1. The minimum angular velocity needed for the cylinder to keep the block stationary when the cylinder is vertical and rotating about its axis, will be

\((g = 10 m/s^{2})\)

A block of mass 10 kg is in contact against the inner wall of a hollow cylindrical drum of radius 1 m. The coefficient of friction between the block and the inner wall of the cylinder is 0.1. The minimum angular velocity needed for the cylinder to keep the block stationary when the cylinder is vertical and rotating about its axis, will be

\((g = 10 m/s^{2})\)

4 Mark(s)

A satellite in force free space sweeps stationary interplanetary dust at a rate of dM/dt = \(\alpha \ v\) , where M is mass and v is the speed of satellite and \(\alpha\) is a constant. The acceleration of satellite is ?

A satellite in force free space sweeps stationary interplanetary dust at a rate of dM/dt = \(\alpha \ v\) , where M is mass and v is the speed of satellite and \(\alpha\) is a constant. The acceleration of satellite is ?

4 Mark(s)

A man weighs 80 kg. He stands on a weighing scale in a lift which is moving upwards with a uniform acceleration of 5 \(m/s^{2}\) What would be the reading on the scale ?

\( (g = 10 m/s^{2}) \)

A man weighs 80 kg. He stands on a weighing scale in a lift which is moving upwards with a uniform acceleration of 5 \(m/s^{2}\) What would be the reading on the scale ?

\( (g = 10 m/s^{2}) \)

4 Mark(s)

A 5000 kg rocket is set for vertical firing. The exhaust speed is 800 m\(s^-1\) To give an initial upward acceleration of 20 m\(s^-2\) .the amount of gas ejected

per second to supply the needed thrust will be?

A 5000 kg rocket is set for vertical firing. The exhaust speed is 800 m\(s^-1\) To give an initial upward acceleration of 20 m\(s^-2\) .the amount of gas ejected

per second to supply the needed thrust will be?

4 Mark(s)

A body of mass 5 kg explodes at rest into three fragments with masses in the ratio 1 : 1 : 3. The fragments with equal masses fly in mutually perpendicular directions with speeds of 21 m/s. The velocity of heaviest fragment in m/s will be ?

A body of mass 5 kg explodes at rest into three fragments with masses in the ratio 1 : 1 : 3. The fragments with equal masses fly in mutually perpendicular directions with speeds of 21 m/s. The velocity of heaviest fragment in m/s will be ?

4 Mark(s)

The mass of a lift is 2000 kg. When the tension in the supporting cable is 28000 N, then its acceleration is ?

The mass of a lift is 2000 kg. When the tension in the supporting cable is 28000 N, then its acceleration is ?

4 Mark(s)

A block of mass m is in contact with the cart C as shown in the figure. The coefficient of static friction between the block and the cart is \(\mu
\).The acceleration \(\alpha\) of the cart that will prevent the block from falling

satisfies?

A block of mass m is in contact with the cart C as shown in the figure. The coefficient of static friction between the block and the cart is \(\mu
\).The acceleration \(\alpha\) of the cart that will prevent the block from falling

satisfies?

4 Mark(s)

A mass M is placed on a very smooth wedge resting on a surface without friction.Once the mass is released, the acceleration to be given to the wedge so that M remains atrest is a where ?

A mass M is placed on a very smooth wedge resting on a surface without friction.Once the mass is released, the acceleration to be given to the wedge so that M remains atrest is a where ?

4 Mark(s)

A conveyor belt is moving at a constant speed of 2 m\(s^-2\). A box is gently dropped on it. The coefficient of friction between them is m = 0.5. The distance that the box will move relative to belt before coming to

rest on it, taking g = 10 m\(s^-2,is\)?

A conveyor belt is moving at a constant speed of 2 m\(s^-2\). A box is gently dropped on it. The coefficient of friction between them is m = 0.5. The distance that the box will move relative to belt before coming to

rest on it, taking g = 10 m\(s^-2,is\)?

4 Mark(s)

A body, under the action of a force \(\overrightarrow{F}\)=\(\)\(6\hat{i}-8\hat{j}+10\hat{k}\) acquires an acceleration of 1 m/\(s^2\).The mass of this body must be?

A body, under the action of a force \(\overrightarrow{F}\)=\(\)\(6\hat{i}-8\hat{j}+10\hat{k}\) acquires an acceleration of 1 m/\(s^2\).The mass of this body must be?

4 Mark(s)

When milk is churned, cream gets separated due to?

When milk is churned, cream gets separated due to?

4 Mark(s)

A block A of mass \(m_1\) rests on a horizontal table. A light string connected to it passes over a frictionless pulley at the edge of table and from its other end another block B of mass \(m_2 \) is suspended. The coefficient of kinetic friction between the block and the table is \(\mu_k\). When the block A is sliding on the table, the tension in the string is

A block A of mass \(m_1\) rests on a horizontal table. A light string connected to it passes over a frictionless pulley at the edge of table and from its other end another block B of mass \(m_2 \) is suspended. The coefficient of kinetic friction between the block and the table is \(\mu_k\). When the block A is sliding on the table, the tension in the string is

4 Mark(s)

A force vector applied on a mass is represented as \(\hat{F}={6 \hat{i}- 8 \hat{j}+10 \hat{k}}\) and accelerates with 1 \(m/s^{2}\) . What will be the mass of the body?

A force vector applied on a mass is represented as \(\hat{F}={6 \hat{i}- 8 \hat{j}+10 \hat{k}}\) and accelerates with 1 \(m/s^{2}\) . What will be the mass of the body?

4 Mark(s)

A monkey of mass 20 kg is holding a vertical rope. The rope will not break when a mass of 25 kg is suspended from it but will break if the mass exceeds 25 kg. What is the maximum acceleration with which the monkey can climb up along the rope?

\((g = 10 m/s^{2})\)

A monkey of mass 20 kg is holding a vertical rope. The rope will not break when a mass of 25 kg is suspended from it but will break if the mass exceeds 25 kg. What is the maximum acceleration with which the monkey can climb up along the rope?

\((g = 10 m/s^{2})\)

4 Mark(s)

A balloon with mass m is descending down with an acceleration a (where a < g). How much mass should be removed from it so that it starts moving up with an acceleration a ?

A balloon with mass m is descending down with an acceleration a (where a < g). How much mass should be removed from it so that it starts moving up with an acceleration a ?

4 Mark(s)

A lift of mass 1000 kg which is moving with acceleration of 1 m/s2 in upward direction, then the tension developed in string which is connected to lift is ?

A lift of mass 1000 kg which is moving with acceleration of 1 m/s2 in upward direction, then the tension developed in string which is connected to lift is ?

4 Mark(s)

A 10 N force is applied on a body produce in it an acceleration of \(1 \ m/s^{2}\) The mass of the body is ?

A 10 N force is applied on a body produce in it an acceleration of \(1 \ m/s^{2}\) The mass of the body is ?

4 Mark(s)

The upper half of an inclined plane of inclination q is perfectly smooth while lower half is rough. A block starting from rest at the top of the plane will again come to rest at the bottom, if the coefficient

of friction between the block and lower half of the plane is given by?

The upper half of an inclined plane of inclination q is perfectly smooth while lower half is rough. A block starting from rest at the top of the plane will again come to rest at the bottom, if the coefficient

of friction between the block and lower half of the plane is given by?

4 Mark(s)

A man fires a bullet of mass 200 g at a speed of 5 m/s. The gun is of one kg mass. By what velocity the gun rebounds backward?

A man fires a bullet of mass 200 g at a speed of 5 m/s. The gun is of one kg mass. By what velocity the gun rebounds backward?

4 Mark(s)

The coefficient of static friction, ms, between block A of mass 2 kg and the table as shown in the figure is 0.2. What would be the maximum mass value of block B so that the two blocks do not move ? The string and the pulley are assumed to be smooth and massless.

\((g =10 \ m/s^{2})\)

The coefficient of static friction, ms, between block A of mass 2 kg and the table as shown in the figure is 0.2. What would be the maximum mass value of block B so that the two blocks do not move ? The string and the pulley are assumed to be smooth and massless.

\((g =10 \ m/s^{2})\)

4 Mark(s)

A bullet is fired from a gun. The force on the bullet is given by F = 600 – 2 ×\(10^5\)t where, F is in newton and t in seconds. The force on the bullet becomes zero as soon as leaves the barrel. What is the average impulse imparted to the bullet?

A bullet is fired from a gun. The force on the bullet is given by F = 600 – 2 ×\(10^5\)t where, F is in newton and t in seconds. The force on the bullet becomes zero as soon as leaves the barrel. What is the average impulse imparted to the bullet?

4 Mark(s)

One end of string of length l is connected to a particle of mass m and the other end is connected to a small peg on a smooth horizontal table. If the particle moves in circle with speed v, the net force on the particle (directed towards centre) will be(T represents the tension in the string) ?

One end of string of length l is connected to a particle of mass m and the other end is connected to a small peg on a smooth horizontal table. If the particle moves in circle with speed v, the net force on the particle (directed towards centre) will be(T represents the tension in the string) ?

4 Mark(s)

Three blocks with masses m, 2mand 3mare connected by strings, as shown in the figure. After an upward force F is applied on block m, the masses move upward atconstant speed v. What is the net force on the block of mass 2m? (g is the acceleration due to gravity) ?

Three blocks with masses m, 2mand 3mare connected by strings, as shown in the figure. After an upward force F is applied on block m, the masses move upward atconstant speed v. What is the net force on the block of mass 2m? (g is the acceleration due to gravity) ?

4 Mark(s)

A block of mass 10 kg placed on rough horizontal surface having coefficient of friction \(\mu =0.5,\) if a horizontal force of 100 N acting on it then acceleration of the block will be ?

A block of mass 10 kg placed on rough horizontal surface having coefficient of friction \(\mu =0.5,\) if a horizontal force of 100 N acting on it then acceleration of the block will be ?

4 Mark(s)

If the force on a rocket, moving with a velocity of 300 m/s is 210 N, then the rate of combustion of the fuel is?

If the force on a rocket, moving with a velocity of 300 m/s is 210 N, then the rate of combustion of the fuel is?

4 Mark(s)

A rigid ball of mass m strikes a rigid wall at 60° and gets reflected without loss of speed as shown in the figure. The value of impulse imparted by the wall on the ball will be ?

A rigid ball of mass m strikes a rigid wall at 60° and gets reflected without loss of speed as shown in the figure. The value of impulse imparted by the wall on the ball will be ?

4 Mark(s)

A block has been placed on a inclined plane with the slope angle \(\theta\) block slides down the plane at constant speed. The coefficient of kinetic friction is equal to ?

A block has been placed on a inclined plane with the slope angle \(\theta\) block slides down the plane at constant speed. The coefficient of kinetic friction is equal to ?

4 Mark(s)

Which one of the following statements is incorrect?

Which one of the following statements is incorrect?

4 Mark(s)

A particle moving with velocity \(\overrightarrow{V}\) is acted by three forces shown by the vector triangle PQR. The v e l o c i t y of the particle will?

A particle moving with velocity \(\overrightarrow{V}\) is acted by three forces shown by the vector triangle PQR. The v e l o c i t y of the particle will?

4 Mark(s)

A shell, in flight, explodes into four unequal parts. Which of the following is conserved?

A shell, in flight, explodes into four unequal parts. Which of the following is conserved?

4 Mark(s)

A car of mass m is moving on a level circular track of radius R. If \(\mu_s \) represents the static friction between the road and tyres of the car, the maximum speed of the car in circular motion is given by?

A car of mass m is moving on a level circular track of radius R. If \(\mu_s \) represents the static friction between the road and tyres of the car, the maximum speed of the car in circular motion is given by?

4 Mark(s)

Two stones of masses m and 2m are whirled in horizontal circles, the heavier one in a radius r/2 and the lighter one in radius r. The tangential speed of lighter stone is n times that of the value of heavier

stone when they experience same centripetal forces. The value of n is ?

Two stones of masses m and 2m are whirled in horizontal circles, the heavier one in a radius r/2 and the lighter one in radius r. The tangential speed of lighter stone is n times that of the value of heavier

stone when they experience same centripetal forces. The value of n is ?

4 Mark(s)

An explosion breaks a rock into three parts in a horizontal plane. Two of them go off at right angles to each other. The first part of mass 1 kg moves with a speed of 12 \(ms^{-1}\)

and the second part of mass 2 kg moves with 8 \(ms^{-1}\) speed. If the third part f lies off with 4 \(ms^{-1}\) speed, then its mass is ?

An explosion breaks a rock into three parts in a horizontal plane. Two of them go off at right angles to each other. The first part of mass 1 kg moves with a speed of 12 \(ms^{-1}\)

and the second part of mass 2 kg moves with 8 \(ms^{-1}\) speed. If the third part f lies off with 4 \(ms^{-1}\) speed, then its mass is ?

4 Mark(s)

A block B is pushed momentarily along a horizontal surface with an initial velocity V. If m is the coefficient of sliding friction between B and the surface, block B

will come to rest after a time?

A block B is pushed momentarily along a horizontal surface with an initial velocity V. If m is the coefficient of sliding friction between B and the surface, block B

will come to rest after a time?

4 Mark(s)

Two masses as shown in the figure are suspended from a massless pulley. The acceleration of the system when masses are left free is ?

Two masses as shown in the figure are suspended from a massless pulley. The acceleration of the system when masses are left free is ?

4 Mark(s)

Three forces acting on a body are shown in the figure. To have the resultant force only along the y-direction, the magnitude of the minimum additional force needed is?

Three forces acting on a body are shown in the figure. To have the resultant force only along the y-direction, the magnitude of the minimum additional force needed is?

4 Mark(s)

A cricketer catches a ball of mass 150 gm in 0.1 sec moving with speed 20 m/s, then he experiences force of?

A cricketer catches a ball of mass 150 gm in 0.1 sec moving with speed 20 m/s, then he experiences force of?

4 Mark(s)

Starting from rest, a body slides down a 45° inclined plane in twice the time it takes to slide down the same distance in the absence of friction. The coefficient of friction between the body and the inclined plane is ?

Starting from rest, a body slides down a 45° inclined plane in twice the time it takes to slide down the same distance in the absence of friction. The coefficient of friction between the body and the inclined plane is ?

4 Mark(s)

A body of mass M hits normally a rigid wall with velocity V and bounces back with the same velocity. The impulse experienced by the body is ?

A body of mass M hits normally a rigid wall with velocity V and bounces back with the same velocity. The impulse experienced by the body is ?

4 Mark(s)

A block A of mass \(m_1\) rests on a horizontal table. A light string connected to it passes over a frictionless pulley at the edge of table and from its other end another block B of mass \(m_2 \) is suspended. The coefficient of kinetic friction between the block and the table is \(\mu_k\). When the block A is sliding on the table, the tension in the string is

4 Mark(s)

A 500 kg car takes a round turn of radius 50 m with a velocity of 36 km/hr. The centripetal force is?

A 500 kg car takes a round turn of radius 50 m with a velocity of 36 km/hr. The centripetal force is?

4 Mark(s)

A monkey is decending from the branch of a tree with constant acceleration. If the breaking strength of branch is 75% of the weight of the monkey, the minimum acceleration with which monkey can slide down without breaking the branch is ?

A monkey is decending from the branch of a tree with constant acceleration. If the breaking strength of branch is 75% of the weight of the monkey, the minimum acceleration with which monkey can slide down without breaking the branch is ?

4 Mark(s)

A block of mass m is placed on a smooth wedge of inclination \(\theta\). The whole system is accelerated horizontally so that the block does not slip on the wedge. The force exerted by the wedge on the block will be (g is acceleration due to gravity) ?

A block of mass m is placed on a smooth wedge of inclination \(\theta\). The whole system is accelerated horizontally so that the block does not slip on the wedge. The force exerted by the wedge on the block will be (g is acceleration due to gravity) ?

4 Mark(s)

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