A block of mass 1kg when placed on an inclined plane does not slip down. Now it is taken from A to B and then B to A very slowly such that pulling force is always along the direction of motion of block. If work done by friction in the round trip is 15 J , then find maximum value of h (in m).

A block of mass 10 kg is placed on an inclined plane when the angle of inclination is 30^(@) . The block just begins to slide down the plane. The force of static friction 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 body of mass 0.5 kg is taken up an inclined plane of length 10 m and height 5 m and then allowed to slide down to the bottom again. The coefficient of friction between the body and the plane is 0.1. The work done by the frictional force over the round trip is

A block of mass m is taken from A to B under the action of a constant force F. Work done by this force is

A block of mass 1 kg slides down on a rough inclined plane of inclination 60^(@) starting from its top. If the coefficient of kinetic friction is 0.5 and length of the plane is 1 m , then work done against friction is (Take g=9.8m//s^(2) )

A block of mass 10kg is placed on a rough surface inclined plane of inclination 37^@ with horizontal. Now the block is released . The work done by the gravitational force and friction force, when the block moves from A to B(sin37^@=0.6 , cos37^@=0.8)

A block of mass 4kg is released from the top of a rough inclines plane of height 10 m . If velocity of the block is 10 m/s at the bottom of the inclined then work done by the friction force on the block will be

A block of mass 0.1 kg attached to a spring of spring constant 400 N/m is pulled rightward from x_(0)=0 to x_(1)=15 mm. Find the work done by spring force.

A block of mass 1 kg slides down a rough inclined plane of inclination 60^(@) starting from its top. If coefficient of kinetic is 0.5 and length of the plane d=2 m, then work done against friction is

A block of mass m is placed on the block of mass M as shown in figure. The horizontal force vecF acts on M during time interval t. If the horizontal surface is smooth, assuming no relative sliding between the blocks, find the a. work done by friction on the blocks b. work done by vecF on the lower block