Step-by-step explanation:
Power is the rate at which work is done. It is expressed as:
Power =
To find the power of the man climbing the ladder, we must know the work he is doing and the duration of the work done.
Work done = force x distance
Since he climbs,
Force = weight = mg (mass x acceleration due to gravity)
distance = height = h
Power =
t is the time
If we know these parameters, we can find the power.