anonymous
  • anonymous
A student lifts a backpack with a force of 50 Newtons. She lifts the backpack 2 meters off the floor. Calcaulate the work she has done.
Mathematics
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
100 J
amistre64
  • amistre64
W = F*d right?
amistre64
  • amistre64
100 newton-meters? might be a joule lol

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anonymous
  • anonymous
thanks
amistre64
  • amistre64
if it was a liquid being lifted, we could use calculus to find the work done :) but this is just a solid mass moved thru a distance so F*d is good
anonymous
  • anonymous
actually she had to move her body through the same distance...so work done by her is >100J

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