Syd5678
Syd5678 Syd5678
  • 01-03-2018
  • Physics
contestada

Please HELP! Many points! How much work does a weightlifter do if he lifts a 400 Newton barbell 3 meters high- 15 times???

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AL2006
AL2006 AL2006
  • 01-03-2018
Work = (force) x (distance)

1 time:   (400 newtons) x (3 meters)  =  1,200 joules

15 times:  (1,200 joules) x (15)  =  18,000 joules
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