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mikelane mikelane
  • 10-02-2017
  • Physics
Answered

A crane with output power of 200w lift a 600N object a vertical distance of 4 meters in how many seconds

A crane with output power of 200w lift a 600N object a vertical distance of 4 meters in how many seconds class=

Verified Answer :

miner3mj
miner3mj miner3mj
  • 10-02-2017

1 w = 1N/s the change in total energy =mgh = 600*4 = 2400N. 2400N/200N/s = 12seconds

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