Question

It takes 7500 J of work to slide a crate a distance of 15 m across a floor. A force of 650 N was applied to the rope. What angle did the rope make with the ground?

Answer 1

Explanation:

the Force of the crate = 7500/15 = 500N

the cosine of the angle = 500/650 = 0.769

so the angle = arc cos 0.769 = 39.7°