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zoesill6 zoesill6
  • 22-02-2017
  • Physics
Answered

A mechanical device requires 500j of work to do 200j of work in lifting a box. What is the efficiency of the device?

Verified Answer :

roytucker
roytucker roytucker
  • 22-02-2017

40% the formula is work output/work input100 so
200/500=.4100=40

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