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anonymous

  • one year ago

A book is sitting on a desk. What best describes the normal force acting on the book?

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  1. anonymous
    • one year ago
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    This image describes it better than I can type it: http://hyperphysics.phy-astr.gsu.edu/hbase/imgmec/normal.gif Also this website, hyperphysics, is pretty helpful in general.

  2. UnkleRhaukus
    • one year ago
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    The book has mass, so gravity is accelerating it toward the centre of the earth. But the book is not moving — the table is holding it up with a normal force the opposes the gravitational force exactly.

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