An elevator might be raised and lowered directly by a winch, as in Figure P7.9a, or the

Question:

An elevator might be raised and lowered directly by a winch, as in Figure P7.9a, or the mechanism might include a counterweight that moves up when the elevator moves down, as in Figure P7.9b. In which case is the change in the gravitational potential energy of the Earthelevator-winch system lower?

Data from Figure P7.9

image text in transcribed