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OpenStudy (anonymous):
to lift a load to the roof , you apply 21n of force to a pulley. The pulley applies 21n of force tot he load. what is the mechanical advantage of the pulley? A.0 B.1 C.40 D.21 (WILL give medal) @jtryon @jada1701877 @Luigi0210 @sammixboo @skullpatrol
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OpenStudy (anonymous):
(b)
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