In the figure -3.90 shown, the net work done by the tension when the bigger block of mass M touches the ground is :

Two blocks A and B of masses 1.5 kg and i.5 kg, respectively are connected by a massless inextensible string passing over a frictionles pulley as shown in the figure. Block A is lifted until block B touches the ground and then block B touches the ground and then block A is released. the initial height of block A is 80 cm when block B just touches the ground. the maximum height reached by block B from the ground after the block A falls on the ground is

A block of mass m is placed on an inclined plane which is moving with constant velocity v in horizontal direction as shown in figure. Then find out work done by the friction in time t if the block is at rest with respect to the incline plane.

A block of mass 1 kg is pulled slowly along the curve path ACB by a tangential force as shown in figure. The magnitude of work done by the frictional force when the block moves from A to B is

A block of mass 1 kg is pulled slowly along the curve path ACB by a tangential force as shown in figure. The magnitude of work done by the frictional force when the block moves from A to B is

The velocity - time graph of a particle of mass 10 kg is shown in the figure. The net work done on the particle in the first two seconds of the motion is

A block of mass 5kg is being raised vertically upwards by the help of a string attached to it. It rises with an acceleration of 2ms^-2 . Find the work done by the tension in the string if the block rises by 2.5m . Also find the work done by the gravity and the net work done.

A block of mass 5kg is being raised vertically upwards by the help of a string attached to it. It rises with an acceleration of 2ms^-2 . Find the work done by the tension in the string if the block rises by 2.5m . Also find the work done by the gravity and the net work done.

A chain (mass M) is hanging from a wooden structure as shown in the figure A. It is slowly taken to a state as shown in the figure B. Calculate the work done by gravity in the process (assume that after reaching the ground, the chain does not form a heap)

A chain (mass M) is hanging from a wooden structure as shown in the figure A. It is slowly taken to a state as shown in the figure B. Calculate the work done by gravity in the process (assume that after reaching the ground, the chain does not form a heap)

A block of mass M is placed on the top of a bigger block of mass 10 M as shown in figure. All the surfaces are frictionless. The system is released from rest, then the distance moved by the bigger block at the instant the smaller block reaches the ground :