Question

Nathan lifts a 5 lb. box 2 feet. How much work has he done?

2 ft-lbs.
5 ft-lbs.
7 ft-lbs.
10 ft-lbs.

Answer 1

10 ft-lbs.

Explanation:

Given data

Weight of box= 5 lb

Height moved = 2 feet

We know that the expression for work done is

Work done= Force * Distance

Work done= 5*2

Work done= 10 10 ft-lbs.