posted by Carolyn
A 1kg block of wood is moving with a velocity of 10 m/s on top of a table. The coefficient of kinetic friction between the block of wood and the table is 0.1. The block of wood is a cube with sides of 12 cm. How far does the block move before coming to a stop? If momentum is conserved, where did the momentum of the block go? The block slows down because of the frictional force between between the block and the table. However, if the frictional force acts at the bottom of the block and the block's center of mass is in the center of the block then there must be a torque acting on the block. Calculate this torque. Why doesn't this torque cause the block to rotate?