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A weight lifter weights 100 Kg

  • Thread starter parthivsmehta
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  • #1
parthivsmehta
A weight lifter weights 100 Kg and can lift 120 Kg of weight, so why can’t he carry himself and float in air for few seconds??
 
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Answers and Replies

  • #2
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He can - it is called 'jumping'
 
  • #3
HallsofIvy
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Adrian Baker's answer was pretty good but I think what you are looking for is "for every action there there is an equal and opposite reaction". In order for a weight lifter to lift a weight, he has press down on the ground with an equal force- no ground, no force, no lift.
 

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