Find the work done when a constant force of 45 lb in the positive x direction moves an object from x = -2 to x = 9 ft.
A) 11 ft-lb
B) 495 ft-lb
C) 45 ft-lb
D) 315 ft-lb
E) 450 ft-lb

Question

Quizplus · Accepted Answer

The work done by a constant force is calculated as the product of the force and the displacement. Here, the displacement is from x = -2 to x = 9, which is a total displacement of 11 ft. Therefore, the work done is 45 lb * 11 ft = 495 ft-lb.

Find the Work Done When a Constant Force of 45