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Friction — JEE Main & Advanced Physics PYQs

60 previous year questions from Friction with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

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1

A body slipping on a rough horizontal plane experiences a deceleration of 4.0 m/s ^2 . Determine the coefficient of kinetic friction between the block and the plane.

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Starting from rest, a block slides down an inclined surface that has an inclination of 30^ with the horizontal. It covers a distance of 8 m in the first two seconds. Determine the

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A block of mass 4 kg slides down an inclined surface having an inclination of 30^ with the horizontal. Starting from rest, it covers 8 m during the first two seconds. Suppose the b

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A block of mass m is positioned on a horizontal table. If the static friction coefficient is , determine the frictional force acting on the block.

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A block is projected along a rough horizontal road at a speed of 10 m/s . Given that the coefficient of kinetic friction is 0.10 , how far does the block travel before coming to a

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A body of mass 2 kg is situated on a rough inclined plane of inclination 30^ . Determine the magnitude of the force parallel to the incline needed to make the block move up the inc

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A body of mass 2 kg is situated on a rough inclined plane of inclination 30^ . Determine the magnitude of the force parallel to the incline needed to make the block move down the i

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A body of mass 2 kg is placed on a rough inclined plane of inclination 30^ . Find the magnitude of the horizontally applied push necessary to initiate the block's movement up the i

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In a children's park, an inclined plane is built with an angle of incline of 45^ in its middle section, as shown in the figure. Determine the acceleration of a boy sliding on this

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A body begins slipping down an incline, travelling half a meter in half a second. How much time will it require to move the subsequent half meter?

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The angle between the resultant contact force and the normal force exerted by a body on another is called the angle of friction. If is the angle of friction and is the coefficient

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Consider the arrangement depicted in the figure. Determine the acceleration of the 1.0 kg blocks. (Assume g = 10 m/s ^2 )

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Consider the arrangement depicted in the figure. Determine the tension in the string connecting the 1.0 kg blocks. (Assume g = 10 m/s ^2 )

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Consider the arrangement depicted in the figure. Determine the tension in the string attached to the 0.50 kg block. (Assume g = 10 m/s ^2 )

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In the arrangement shown in the figure, the tension in the string is 16 N and the acceleration of each block is 0.5 m/s ^2 . Determine the friction coefficients ₁ and ₂ at the two

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The coefficient of friction between the table and the block shown in the figure is 0.2 . Calculate the tensions in the two strings.

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The coefficient of friction between a road and the tyre of a vehicle is 4/3 . Determine the maximum incline the road can have such that when hard brakes are applied and the wheels

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The friction coefficient between an athlete's shoes and the ground is 0.90 . Suppose a superhero wears these shoes and races for 50 m . There is no upper limit on his capacity for

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The friction coefficient between an athlete's shoes and the ground is 0.90 . Suppose a superhero wears these shoes and races for 50 m starting from rest, taking exactly the minimum

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A car is travelling at a speed of 21.6 km/hr when it reaches a 12.8 m long slope with an inclination of 30^ , as shown in the figure. The coefficient of friction between the tyre a

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A car initiates its motion from rest on a half kilometer long bridge. The coefficient of friction between the tyre and the road is 1.0 . Determine the minimum possible time require

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As shown in the figure, two blocks are in contact sliding down an inclined surface of inclination 30^ . The friction coefficient between the block of mass 2.0 kg and the incline is

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Two blocks are initially in contact sliding down an inclined surface of inclination 30^ , where the 4.0 kg block is lower on the incline than the 2.0 kg block. The friction coeffic

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A light rod connects two masses M₁ and M₂ , and the system is slipping down a rough incline making an angle with the horizontal. If the friction coefficient at both contacts is , d

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A block of mass M is placed on a rough horizontal surface. The coefficient of static friction between the block and the surface is . The block is to be pulled by applying a force t

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As shown in the figure, the friction coefficient between the board and the floor is . Determine the maximum force the man can exert on the rope so that the board does not slip on t

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A 2 kg block is positioned over a 4 kg block, and both are placed on a smooth horizontal surface. The coefficient of friction between the blocks is 0.20 . Determine the acceleratio

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A 2 kg block is positioned over a 4 kg block, and both are placed on a smooth horizontal surface. The coefficient of friction between the blocks is 0.20 . Determine the acceleratio

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Determine the accelerations a₁ , a₂ , and a₃ of the three blocks illustrated in the figure when a horizontal force of 10 N is applied to the 2 kg block. Take g = 10 m/s ^2 .

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Three blocks of masses 2 kg , 3 kg , and 7 kg are stacked one over the other from top to bottom on a horizontal surface. The coefficient of friction between the 2 kg and 3 kg block

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Three blocks of masses 2 kg , 3 kg , and 7 kg are stacked one over the other from top to bottom on a horizontal surface. The coefficient of friction between the 2 kg and 3 kg block

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The friction coefficient between the two blocks shown in the figure is , while the floor is smooth. Determine the maximum horizontal force F that can be applied without disturbing

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The coefficient of friction between the two blocks displayed in the figure is , whereas the floor is smooth. Assume the complete system is situated inside an elevator that is desce

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Consider the arrangement illustrated in the figure. Suppose a small electric field E acts in the vertically upward direction, and the upper block has a positive charge Q on its top

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Under the influence of an applied horizontal force, a block of mass m slips on a rough horizontal table. The coefficient of friction between the block and the table is . Assuming t

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Determine the acceleration of the block of mass M in the arrangement depicted in the figure. The coefficient of friction between the two blocks is ₁ , while the coefficient of fric

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A 2 kg block is pressed against a rough vertical wall by a perpendicular force of 40 N . The coefficient of static friction is 0.5 . A second horizontal force of 15 N is applied to

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A person ( 40 kg ) manages to remain at rest between two vertical walls by pressing one wall A with his hands and feet and the other wall B with his back, as shown in the figure. T

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A person ( 40 kg ) manages to remain at rest between two vertical walls by pressing one wall A with his hands and feet and the other wall B with his back. The friction coefficient

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A small block of mass m is placed at the left end of a larger block of mass M and length l , as shown in the figure. The system is capable of sliding on a horizontal road. It is gi

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A body of mass M is placed on a rough horizontal surface having a friction coefficient . A person attempts to pull the body by applying a horizontal force, yet the body remains sta

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Suppose the contact force exerted by a rough horizontal surface on a body resting on it has a constant magnitude. If the angle between this contact force and the vertical is reduce

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To prevent slipping when walking on ice, one should take small steps. This is due to the fact that shorter steps ensure

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Observe the situation depicted in the figure. The wall is smooth, whereas the contact surfaces between A and B are rough. In equilibrium, the friction exerted on B by A

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Starting from rest, a scooter travels with a constant acceleration for a time t₁ , subsequently moves with a constant velocity for the next t₂ , and finally undergoes a constant de

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Consider the situation shown in the figure. Suppose all the surfaces are rough. The direction of friction on B due to A

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To bring a car to a halt over the shortest distance on a horizontal road, one must

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A boy of mass M exerts a horizontal force to slide a box of mass M' across a rough horizontal surface. The friction coefficient between the boy's shoes and the floor is , while tha

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Two cars possessing unequal masses are equipped with similar tyres. If they travel at identical initial speeds, the minimum stopping distance

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A block A placed on an inclined surface just starts to slide when the inclination reaches 30^ . If block A is replaced by another block B , it is observed that it just starts to sl

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Identify the correct statements concerning the friction between two bodies.

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Suppose F , F_N , and f represent the magnitudes of the contact force, normal force, and friction exerted by one surface on another kept in contact. If none of these values is zero

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A block rests on a rough floor while a horizontal force F is exerted on it. The frictional force f acting on the block due to the floor is recorded for various values of F , and a

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A vehicle is travelling towards the east on a horizontal road. Neglect any forces exerted by the air. The frictional force exerted by the road on the vehicle

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The contact force applied by a body A on another body B is equal to the normal force between the two bodies. From this, it can be concluded that

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Identify the correct statements concerning the friction between two bodies.

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The contact force applied by a body A on another body B is equal to the normal force between the two bodies. From this, it can be concluded that

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A block rests on a rough floor while a horizontal force F is exerted on it. The frictional force f acting on the block due to the floor is recorded for various values of F , and a

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Suppose F , F_N , and f represent the magnitudes of the contact force, normal force, and friction exerted by one surface on another kept in contact. If none of these values is zero

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A vehicle is travelling towards the east on a horizontal road. Neglect any forces exerted by the air. The frictional force exerted by the road on the vehicle

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