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Forces & Simple Machines

by Richards, Jon

$28.91

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Description

Simple machines are used to overcome forces all the time. Even our arms are lifting machines that overcome the force of gravity. This exciting book teaches readers how to make simple machines and provides them with an excellent understanding of forces, friction, pulleys and gears.

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Product Details

  • Jul 30, 2007 Pub Date:
  • 1404239081 ISBN-10:
  • 9781404239081 ISBN-13:
  • English Language