Asked by Shelin

To lift a load to the roof, you apply 21 N of force to a pulley. The pulley applies 21 N of force to the load. What is the mechanical advantage of the pulley?

A.0
B.1
C.40
D.21
Answered by Henry
B. 1.
Answered by cat
b. 1.
Answered by joby
how do i show my work
Answered by A Girl That Needs Help!!!!!!!
It is B I past my test with it!
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