A crate of mass 55 kg is attached to one end of a string, and the other end of the strin...

A crate of mass 55 kg is attached to one end of a string, and the other end of the string runs over a pulley and is held by a person as in Figure 3.22A. If the person pulls with a force of 85 N, what is the crate’s acceleration?

(reference figure 3.22A)