A box is dropped onto a conveyor belt moving at 3.4 m/s. If the coefficient of friction between the box and the belt is 0.27, how long will it take before the box moves without slipping?
A box rests on the (horizontal) back of a truck. The coefficient of static friction between the box and the surface on which it rests is 0.24. What maximum distance can the truck travel (starting from rest and moving horizontally with constant acceleration) in 3.0 s without having the box slide?
Consider the 52.0-kg mountain climber shown. Assume that the force that the mountain climber exerts with her feet on the vertical rock face is exerted parallel to her legs. Also, assume that negligible force is exerted by her arms.
Find the tension in the rope.
Find the force that the mountain climber must exert with her feet on the vertical rock face to remain stationary.
Find the minimum coefficient of friction between the climber’s shoes and the cliff.