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Ch. 13 Section 3 Weightlessness

Ch. 13 Section 3 Weightlessness. 1. measuring weight. you stand on a scale and your weight pushes down scale pushes up with a force equal to your weight force balances the pull of gravity. 2. free fall. when an object is falling and the only force acting on it is gravity.

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Ch. 13 Section 3 Weightlessness

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  1. Ch. 13 Section 3Weightlessness

  2. 1. measuring weight • you stand on a scale and your weight pushes down • scale pushes up with a force equal to your weight • force balances the pull of gravity

  3. 2. free fall • when an object is falling and the only force acting on it is gravity

  4. 3. weightlessness • condition that occurs in free fall when the weight of an object seems to be zero • scale in an elevator, both person and scale are in a free fall so scale is no longer pushing up on you • you feel weightless because nothing is pushing up on you

  5. 4. weightlessness in orbit • when shuttle orbits, all objects in it are in free fall • they fall in a curved path around Earth • this makes objects appear weightless • small push causes objects to drift away

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