Block Over Block

A block B is placed over a cart which in turn lies over a smooth horizontal floor. Block A and Block C are connected to block B with light inextensible strings passing over light frictionless pulleys fixed to the cart as shown. Initially the blocks and the cart are at rest. All the three blocks have mass m and the cart has mass M(M=3m) . Now a constant horizontal force of magnitude F is applied to block A towards right. Q. Let the coefficient of friction between block B and cart is mu(mugt0) and friction is absent everywhere else. Then the maximum value of force F applied to block A such that there is no relative acceleration between block B and cart is

A block B is placed over a cart which in turn lies over a smooth horizontal floor. Block A and Block C are connected to block B with light inextensible strings passing over light frictionless pulleys fixed to the cart as shown. Initially the blocks and the cart are at rest. All the three blocks have mass m and the cart has mass M(M=3m) . Now a constant horizontal force of magnitude F is applied to block A towards right. Q. Taking friction to be absent every where the magnitude of tension in the string connecting block B and block C is

mu is coefficient of friction between all surfaces . Block A is kept over block B on inclined plane . The minimum force required such that 'A' block can accelerate along applied force is mg sin theta + n mu g "cos" theta , calculate n .

Assertion: In the figure shown, linear momentum of system (of blocks A and B) moves towards right during motion of block A over the block B. Reason: Initial acceleration of center of mass is towards right.

question based on block over wedge constrained

A block P of mass m is placed on a smooth horizontal surface. A block Q of the same mass is placed over the block P and the coefficient of static friction between them is mu . A spring of spring constant K is attached to block Q. The blocks are displaced together to a distance A and released. The upper block oscillates without slipping over the lower block. The maximum frictional force between the block is:

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 block of mass m is kept over another block of mass 2m. Coefficient of friction between two blocks is mu and that of between lower blood from the horizontal surface is zero. A horizontal force F=4/3 mu mg is applied on the block of mass 2m . Acceleration of lower block is