Asked by Sabrina

A person pushes a 10 kg crate 5 m up a 29 degree incline with an 80 N force parallel to the incline. The fricitonal force is 20 N.
Find the work done:
a) by the person
b) by gravity
c) by friction

Answers

Answered by Henry
a. Work = F*d = 80 * 5 = 400 J.

b. h = 5*sin29 = 2.424 m.
Work = F*h = mg*h = 98*2.424 = 237.6 J.

c. Work = 20 * 5 = 100 J.
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