What is Plank length?

Two persons A and B are standing at the two opposite ends of a plank of length 4 m as shown in the figure. Plank is kept on a frictionless horizontal surface. Displacement of Plank, when A and B interchange their positions on the plank is (given m_A=40 kg, m_B= 60 kg, m_(plank) = 20 kg)

A man of mass M stands at one end of a stationary plank of length L, lying on a smooth surface. The man walks to the other end of the plank. If the mass of the plank is M//3 , the distance that the man moves relative to the ground is

A man of mass M stands at one end of a stationary plank of length L, lying on a smooth surface. The man walks to the other end of the plank. If the mass of the plank is M//3 , the distance that the man moves relative to the ground is

A block of mass'm' it kept over the smooth surface of the plank of mass M. the plank of length l is kept over the smooth horizontal surface. A constant horizontal force F is applied onto the plank as shown in figure. Calculate the time after which the block falls off the plank?

A boy mass m runs on ice with velocity v_() and steps on the end of a plank of length l and mass M which is perpendicular to his path. (a). Describe quantitatively the motion of the system after the boy is on the plank. Neglect friction with the ice. (b). One point on the plank is at rest immediately after the collision. Where is it?

Two men A and B are sitting at th eend of a plank of length L, if plank is rotating with angular velocity omega about an axis perpendicular to its length and passing through a point at a distance of L//3 from A. The angular velocity of B with respect to A is

A man of mass m stands at the left end of a uniform plank of length L and mass M, which lies on a frictionaless surface of ice. If the man walks to the other end of the plank, then by what distance does the plank slide on the ice?

A man of mass m stands at the left end of a uniform plank of length L and mass M, which lies on a frictionaless surface of ice. If the man walks to the other end of the plank, then by what distance does the plank slide on the ice?

A man of mass m stands at the left end of a uniform plank of length L and mass M, which lies on a frictionaless surface of ice. If the man walks to the other end of the plank, then by what distance does the plank slide on the ice?

A bullet loses 1//20 of its velocity in passing through a plank. What is the least number of plank required to stop the bullet .