two blocks are connected over a pulley. The mass of block A is 32 kg, and the coefficient of kinetic

美國高中 AP Physics C HW22 #6 In the figure below, two blocks are connected over a pulley. The mass of block A is 32 kg, and the coefficient of kinetic friction between A and the incline is 0.24. Angle θ is 30°. Block A slides down the incline at constant speed. What is the mass of block B? Assume the connecting rope has negligible mass. (The pulley's function is only to redirect the rope.)