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

Two blocks of masses 'M' and 'm' are placed on one another on a smooth horizontal surface as shown in the figure. The force 'F' is acting on the mass 'M' horizontally during time interval 't'. Assumings no relative sliding between the blocks, The work done by friction on the blocks is

Two block of masses 'M' and 'm' are placed on one another on a smoothe horizontal surface as shown in the figure. The force 'F' is acting on the mass 'M' horizontally during time intervel 't' Assuming no relative sliding between the blocks, the work done by friction on the blocks is . . . . .

A block of mass m is kept over another block of mass 2 m and the system rests on a smooth horizontal surface. The coefficient of friction between the blocks is 0.50. Find the work done by the force of friction on the smaller block by the bigger block during a displacement d of the system, when a force mg is applied to the lower block.

A block of mass m is kept over another block of mass 2m and the system rests on a smooth horizontal surface. The coefficient of friction between the block is 0. 50 . Find the work done by the force of friction on the smaller block by the bigger block during a displacement the of the system when a force mg is applied to the lower block

A small block B of mass m_2 is placed on another block A of mass m_1 A constant horizontal force F is applied to the block A. All the surfaces are assumed to be frictionless. Find the acceleration of center of mass of the system

In fig Block m_(2) is loaded on block m_(1) . If there is no relative sliding between the block and the inclined plane is smooth , find the friction force between the block

In fig Block m_(2) is loaded on block m_(1) . If there is no relative sliding between the block and the inclined plane is smooth , find the friction force between the block

A bullet of mass 'm' moving with velocity 'u' passes through a wooden block of mass M = nm as shown in figure. The block is resting on a smooth horizontal floor. After passing through the block, velocity relative to the block is .