Physics-
General
Easy
Question
A string AB of length 21 is fixed at A to a point on a smooth horizontal table. A particle of mass 
attached to B is initially at a distance 1 from A as shown in figure. The particle is projected horizontally with speed u at right angels to AB. The impulsive tension in the string is
- mu
The correct answer is:
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Determine the force ' P ' required to give the open link chain of total length ' L ', a constant velocity v=dy/dt. The chain has a mass ' 
' per unit length. Neglect the small size and mass of the pulley and any friction in the pulley.
Determine the force ' P ' required to give the open link chain of total length ' L ', a constant velocity v=dy/dt. The chain has a mass ' ' per unit length. Neglect the small size and mass of the pulley and any friction in the pulley.
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A ball of mass 1 kg is attached to an inextensible string. The ball is released from the position shown in fig. Find the impulse imparted by the string to the ball immediately after the string becomes taut.
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A ball A is falling vertically downwards with velocity 
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'n' smooth spheres have masses 'm', 'm/e', ' 
', 
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If an ivory ball of mass 2 m moving with a velocity ' 
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Three balls A, B and C are placed on a smooth horizontal surface. Given that 
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Net force acting on block of mass m if the block is stationary with respectively lift is
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Block A is placed on a rough wedge B which is placed on a smooth surface. The wedge has angle of inclination of 30° and is imparted a horizontal acceleration g towards right. Block A is given an initial velocity 
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Block A is placed on a rough wedge B which is placed on a smooth surface. The wedge has angle of inclination of 30° and is imparted a horizontal acceleration g towards right. Block A is given an initial velocity from rest. Find the coefficient of friction for which block A moves with constant velocity with respect to wedge
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In the diagram shown in figure wedge of mass M is stationary. Block of mass m=2 kg is slipping down. Force of friction on the wedge from ground is :
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In case (i) wedge B is stationary and block A starts sliding when the angle of plane is greater than 
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i) 
ii) 
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i)
ii)
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sphere B is in air sandwiched between blocks A and C which are compressed by two springs of spring constants 
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and 
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will be :
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A block A of mass 2 kg is resting on the block B of mass 3 kg which is placed on a 30° incline. The coefficient of friction between two blocks is 0.30 and block B and incline is 0.10. A force of 4 N is applied to block A parallel to the incline. Find the acceleration of block A :
A block A of mass 2 kg is resting on the block B of mass 3 kg which is placed on a 30° incline. The coefficient of friction between two blocks is 0.30 and block B and incline is 0.10. A force of 4 N is applied to block A parallel to the incline. Find the acceleration of block A :
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A block of mass m is placed on another block of mass M. Two blocks are sliding on a smooth inclined plane. Then, the frictional force developed between the blocks is :
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physics-General
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Three blocks A, B and C of different masses as shown, are placed over each other. The coefficients of friction are shown. Blocks placed in one vertical line are made to move towards right with same velocity at the same instant. Find the time taken by the upper block to slide down the middle block:
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In the arrangement as shown masses of block A and B are 4 m and m respectively. The coefficient of friction between all surfaces is 0.05. What should be ratio of 
so that both blocks A and B move with same acceleration of 
In the arrangement as shown masses of block A and B are 4 m and m respectively. The coefficient of friction between all surfaces is 0.05. What should be ratio of so that both blocks A and B move with same acceleration of
physics-General
