Chemistry, 28.08.2019 17:00 Pen350

Afixed, single pulley that is used to lift a block does which one of the following?
a.
doubles the force required to lift the block
b.
decreases the force required to lift the block
c.
makes the block easier to lift by changing the direction of the force needed to lift it
d.
decreases the force required and changes the direction of the force required

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Afixed, single pulley that is used to lift a block does which one of the following?
a.
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