A man of mass m, 75.0 kg holds on to a rope that passes through three pulleys and is attached to the ceiling at point A as shown in the figure. One of the pulleys is connected to a box of mass m, = 280 kg that slides on a frictionless plane inclined at an angle 0 = 45.0"with respect to the horizontal. The pulleys are massless and frictionless and the system is subject to the regular force of gravity.

A man of mass m, 75.0 kg holds on to a rope that passes through three pulleys and is attached to the ceiling at point A as shown in the figure. One of the pulleys is connected to a box of mass m, = 280 kg that slides on a frictionless plane inclined at an angle 0 = 45.0"with respect to the horizontal. The pulleys are massless and frictionless and the system is subject to the regular force of gravity.