Physics
posted by Jim on .
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?

P= mgh/t
is correct.
Potential energy gained is m g h Joules.
Power is energy per unit time, Joules per second or Watts. 
work= change in potential energy= mgh
You did use it.