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Physics, 06.04.2020 22:08 katiebotts18

What does a pulley system need in order to reduce the force needed to lift an object?
A. exactly one pulley that has a fixed position
B. No pulley system can reduce the force needed to lift an object.
C. at least one movable pulley
D.
a load that is not too heavy

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What does a pulley system need in order to reduce the force needed to lift an object?
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