A plank is moving in a horizontal direction with a constant acceleration `ahati` . A uniform rough cubical block of side `l` rests on the plank, and is at rest relative to the plank.
Let the center of mass of the block be at `(0, l//2)` at a given instant. If `a=g//10`, then the normal reaction exerted by the plank on the block at that instant acts at

A block of mass m is kept on a rough plank which moves with a horizontal acceleration a. If the plank was at rest at t=0 , and the block does not slide relative to the plank, find the work done by friction on the (a) block, (b) plane, (c) system, (block+plank) during time t .

A block of mass m is kept on a rough plank which moves with a horizontal acceleration a. If the plank was at rest at t=0 , and the block does not slide relative to the plank, find the work done by friction on the (a) block, (b) plane, (c) system, (block+plank) during time t .

A man of mass m is standing on a plank of equal mass m resting on a smooth horizontal surface. The man starts moving on the plank with speed u relative to the plank. The speed of the man relative to the ground is

A man of mass m is standing on a plank of equal mass m resting on a smooth horizontal surface. The man starts moving on the plank with speed u relative to the plank. The speed of the man relative to the ground is

An experimenter is inside a uniformly accelerated train. Train is moving horizontally with constant acceleration a_(0) . He places a wooden plank AB in horizontal position with end A pointing towards the engine of the train. A block is released at end A of the plank and it reaches end B in time t_(1) . The same plank is placed at an inclination of 45^(@) to the horizontal. When the block is released at A it now climbs to B in time t_(2) . It was found that (t_(2))/(t_(1))= 2^((5)/(4)) . What is the coefficient of friction between the block and the plank?

A man of mass m moves on a plank of mass M with a constant velocity u with respect to the plank, as shown in figure. a.If the plank rests on smooth horizontal surface, determine the velocity of the plank. .

A man of mass M stands at one end of a plank of length L Which lies at rest on a frictionless surface . The man walks to the other end of the plank. If the mass of the plank is 3M, the distance that the man moves relative to the ground is

A man of mass M stands at one end of a plank of length L Which lies at rest on a frictionless surface . The man walks to the other end of the plank. If the mass of the plank is 3M, the distance that the man moves relative to the ground is

A plank of mass 5kg is placed on a frictionless horizontal plane. Further a block of mass 1kg is placed over the plank. A massless spring of natural length 2m is fixed to the plank by its one end. The other end of spring is compressed by the block by half of spring's natural length. They system is now released from the rest. What is the velocity of the plank when block leaves the plank? (The stiffness constant of spring is 100N//m )

A planck of mass 5kg is placed on a frictionless horizontal plane. Further a block of mass 1kg is placed over the plank. A massless spring of natural length 2m is fixed to the plank by its one end. The other end of spring is compressed by the block by half of spring's natural length. They system is now released from the rest. What is the velocity of the plank when block leaves the plank? (The stiffness constant of spring is 100N//m )