Answer Happy

1. A block of mass my sits on a level surface. The coefficient of static friction between the block and the surface is us and the coefficient of kinetic friction is Hk. A second block of mass m2 hangs from a massless, unstretchable rope that connects the blocks via a frictionless pulley. The blocks feel a uniform gravitational acceleration, g. mi y m2 T a) Draw the free body diagram for each block assuming the blocks remain stationary [2] b) For the blocks to remain stationary, what is the minimum value of us? [3] c) Assume the block with mass m, slides on the surface. What is the magnitude of the acceleration of the blocks? [3] d) Assume the magnitude of the blocks' acceleration is g/2 and Hk = 1/2. What is the tension in the rope in terms of m, and g? [2]