Question

A mechanic uses a mechanical lift to raise a car. The car weighs 11,000 N. The lift raises the car 2.5 m.



How much work is required to accomplish this task?



A.22,500 J


B.27,500 J


C.2.27 x 10-4 J


D.4400 J

Answer 1

work = change in potential energy ((as it is a conservative force))
work = mg * delta h = weight * h