Given: each block has masses m1 = m2 = m3 = m and the coefficient of kinetic friction is µ. the magnitude of f equals twice the total frictional force. apply a horizontal force f in pushing an array of three identical blocks in the horizontal plane (see sketch). m1 m2 m3 f µ find the force f23 with which the second block is pushing the third block.

Which is not a step in the rock cycle?

An open cart is moving along a straight frictionless horizontal track. when rain starts falling vertically into the cart, what happens to the speed of the cart?

Two masses are connected by a rope that hangs over a pulley as shown below. the pulley is a uniform cylinder of radius 푅=0.381meters and mass 푀=3.1푘푔. initially 푚"is on the ground and 푚#rests 2.5 meters above the ground. if the system is released, use conservation of energy to determine the speed of 푚#just before it strikes the ground. assume the pulley bearing is frictionless.