Pulleys
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4 Terms
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Applying force to an object is sometimes:
Accomplished through the use of a pulley
2
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A pulley is a system that:
Is used to change the direction, but not the amount, of a force
3
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A pulley system consists of:
A rope, belt, or chain looped over a wheel
4
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It can be useful in certain situations because:
It is often easier to pull with a downward force than an upward force
Note 
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