4. A massless string is wrapped around solid cylinder with mass mC = 10kg and radius rc = .25m on a ramp forming an angle 6 = 5313\". The string is placed over a pulley, which can be treated as a disk with mass ind = 19kg and radius rd : .2m, and attached to a block with mass mb : 20kg. The mass of the cylinder and the mass of the pulley are uniformly distributed. The system is released from rest. You may assume the string never slips and the cylinder rolls without slipping. a) Find the acceleration of the block ms. the acceleration of the center of mass of me, the angular acceleration around the center of mass of m5, and the angular acceleration of the pulley around its center. Will mg, fall or will it rise? b) What is the minimum coefcient of static friction such that rolling without slipping is possible? c) For part a) you should have found that mg, will fall. Using the acceleration you calculated in part a) what is the speed of mb right before it reaches the oor if mg, is initially 4m above the oor? (1) Find the speed of 1m. right before it reaches the ground using conservation of energy. Does this agree with your previous anewer