pulleys ben
Post on 30-May-2015
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Pulleys!Ben Knaus
Pulleys! Pulleys make lifting objects easier. A pulleys is a wheel and a rope.
Pulleys!Pulleys are used to pull things up.Pulleys make work easierPulleys may have been invented by
Archimedes.
Pulleys!Some pulleys are not wheels.Chain pulleys are in engines.Elevators have pulleys.
Real life pictures.
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