I'm working on this rather simple pulley problem, and can't quite figure it out. It doesn't even involve acceleration. Could anyone help me out? Thanks. Here's the problem: A crate is pulled up using frictionless pulleys in the manner shown in the figure. The angle is 45 degrees. The masses are, for the small pulley, m1=3.5 kg, for the traveling pulley, M2=6.3 kg, and for the crate, MC=37.4 kg. What is the tension with which the operator must pull on the cable (assume the cable is of neglible mass) in order to raise the crate at a constant speed? Here's the illustration.