Pull, Lift, and Lower: A Book About Pulleys (Amazing Science: Simple Machines);
Pull, Lift, and Lower: A Book About Pulleys (Amazing Science: Simple Machines)

Describes many different kinds, uses, and benefits of pulleys. Provides examples of pulleys by showing a flagpole, a crane, an elevator and window blinds.

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Describes many different kinds, uses, and benefits of pulleys. Provides examples of pulleys by showing a flagpole, a crane, an elevator and window blinds.

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