A block of mass `m=2kg` is placed in equilibrium on a moving plank accelerating with `a=4m//s^(2)` . If coefficient of friction between plank and block `mu=0.2` . The friction force acting on theblock is:

A block of mass m=2kg is placed in equilibrium on a moving plank accelerating with a=1m//s^(2) . If coefficient of friction between plank and block mu=0.2 . The friction force acting on theblock is:

If coefficient of friction between both the block is mu- (1)/(2) . Find friction force acting between both block.

A block of mass 1 kg is placed on a truck which accelerates with acceleration 5ms^(-2) . The coefficient of static friction between the block and truck is 0.6. The frictional force acting on the block is

A block of mass 1 kg is placed on a truck which accelerates with acceleration 5ms^(-2) . The coefficient of static friction between the block and truck is 0.6. The frictional force acting on the block is

A block of mass m is placed in equilibrium on a moving plank. The maximum horizontal acceleration of the plank for mu=0.2 is:

A block of mass 'm' is placed on the floor of a lift, moving upward with an uniform acceleration a = g. ( mu is the coefficient of friction between block and the floor of lift). If a horizontal force of umg acts on the block, then horizontal acceleration of the body is .......

A block of mass 'm' is placed on the floor of a lift, moving upward with an uniform acceleration a = g. ( mu is the coefficient of friction between block and the floor of lift). If a horizontal force of umg acts on the block, then horizontal acceleration of the body is .......

A small block of mass 1kg is placed over a plank of mass 2kg. The length of the plank is 2 m. coefficient of friction between the block and the plnak is 0.5 and the ground over which plank in placed is smooth. A constant force F=30N is applied on the plank in horizontal direction. the time after which the block will separte from the plank is (g=10m//s^(2))

A small block of mass 1kg is placed over a plank of mass 2kg. The length of the plank is 2 m. coefficient of friction between the block and the plnak is 0.5 and the ground over which plank in placed is smooth. A constant force F=30N is applied on the plank in horizontal direction. the time after which the block will separte from the plank is (g=10m//s^(2))

A block of mass M is sliding down the plane. Coefficient of static friction is mu_(s) and kinetic friction is mu_(k) . Then friction force acting on the block is :