A block with mass m1 is placed on an inclined plane with slope angle a and is connected to a second hanging block with mass mg by a cord passing over a small, 1 j frictionless pulley (see Figure). The coefficient of static 4L friction is us and the coefficient of kinetic friction is pk. a) Find the mass m; for which block m1 moves up the N\" m plane at constant speed once it is set in motion. b) Find the mass mg for which block m1 moves down the plane at constant speed once it is set in motion. c) For what range of values of mg will the blocks remain at rest if they are released from rest? la