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Posted by on Monday, December 5, 2011 at 8:54am.

A 90 kg mover climbs a ladder to a height of 8 m in 32 s. Find the power rating of the mover. I solved by using P= mgh/t and came up with 220.5 watts. Is this correct or am I suppose to use P=w/t and not use gravity in the equation?

  • Physics - , Monday, December 5, 2011 at 10:34am

    You will get the same answer either way, if w = work. Gravity enters into both calculations.

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