A block A of mass M rests on a wedge B of mass 2M and inclination `theta`. There is sufficient friction between A and B so that A does not slip on B. If there is no friction between B and ground, the compression in spring is

The coefficient of friction between the block A of mass m and the triangular wedge B of mass M is mu . There in no friction between the wedge and the plane if the system (block A+ wedge B) is released so that there is no stiding between A and B find the inclination theta

A solid sphere of mass m and radius R is placed over a plank of same mass m . There is sufficient friction between sphere and plank to prevent slipping. Force of friction between sphere and plank is

A block of mass m is kept on an inclined plane of mass 2m and inclination alpha to horizontal. If the whole system is accelerated such that the block does not slip on the wedge then :

A block of mass m lies on wedge of mass Mas shown in figure. Find the minimum friction coeffcient required between wedge Mand ground so that it does not move while block m slips down on it.

a Block of mass m is placed on a wedge of mass M there is no friction between the block and the wedge .The minmum coefficient of friction between the wedge and the gound so that wedge does not move is,

A cube of mass m is placed on top of a wedge of mass 2m, as shown in figure. There is no friction between the cube and the wedge. The minimum co - efficient of friction between the wedge and the horizontal surface, so that the wedge does not move is

A block A of mass 2 kg rests on another block B of mass 8 kg which rests on a horizontal floor. The coefficient of friction between A and B is 0.2 while that between B and floor is 0.5. when a horizontal force of 25 N is applied on the block B. the force of friction between A and B is