Put Pulleys to the Test

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Put Pulleys to the Test by Walker, Sally M.; Feldmann, Roseann, 9780761378679
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  • ISBN: 9780761378679 | 0761378677
  • Cover: Paperback
  • Copyright: 8/1/2011

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What do flagpoles and some window blinds have in common? They use pulleys to perform work! Pulleys are simple machines. They help us to do jobs more easily. But dont take our word for it. Put pulleys to the test with the fun experiments youll find in this book.
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