Friction Force – MSQ - Physics MCQ
10 Questions MCQ Test Topic wise Tests for IIT JAM Physics - Friction Force – MSQ
Two block of masses m1 and m2 are connected with a massless unstretched spring and placed over a plank moving with an acceleration a as shown in figure. The coefficient of friction between the blocks and platform is µ. Choose the correct statements :
All the blocks shown in the figure are at rest. The fully is smooth and the strings are light. Coefficient of friction at all the contacts is 0.2. A frictional force of 10 N acts between A and B. The block A is about to slide on block B. The normal reaction and frictional force exerted by the ground on the block B is.
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A block A (5 kg) rests over another block B (3 kg) placed over a smooth horizontal surface. There is friction between A and B. A horizontal force F1 gradually increasing from zero to a maximum is applied to A so that the blocks move together without relative motion. Instead of this another horizontal force F2, gradually increasing from zero to a maximum is applied to B so that the blocks move together without relative motion. Then :
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Two blocks of masses 5kg and 3kg are placed in contact over an inclined surface of angle 37°, as shown. µ1 is friction coefficient between 5kg block and the surface of the incline and similarly, µ2 is friction coefficient between the 3kg block and the surface of the incline. After the release of the blocks from the inclined surface,
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The value of mass m for which the 100 kg block remains in static equilibrium is :
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A block of mass 1kg is stationary with respect to a conveyor belt that is acceleration with 1m/s2 upwards at an angle of 30° as shown in figure. Which of the following is/are correct?
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A plank of mass m1 = 8kg with a bar of mass m2 = 2kg placed on its rough surface, lie on a smooth floor of elevator ascending with an acceleration g/4. The coefficient of friction is µ = 1/5 between is m1 and m2. A horizontal force F = 30N is applied to the plank. Then choose the correct statements :
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In the shown arrangement, if f1, f2 and T be the frictional forces on 2kg block, 3kg block and tension in the string respectively, choose the correct statements :
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Two blocks with masses M1 and M2 of 10 kg and 20 kg respectively are placed as in figure. Coefficient of friction µ = 0.2 between all surfaces, then choose the correct statement.
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The force F1 that is necessary to move a body up an inclined plane is double the force F2 that is necessary to just prevent it from sliding down then :
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