Question

It takes me 12s to lift a box upward with 20 N of force to a height of 45m. What was my power output ?

Answer 1

75Watts

Step-by-step explanation:

Given parameters:

Time = 12s

Force applied = 20N

Height = 45m

Unknown:

Power output = ?

Solution:

Power is defined as the rate at which work is done.

It is mathematically expressed as;

Power =
`(work done)/(time)`

Work done = force x distance = 20 x 45 = 900J

Power =
`(900)/(12)` = 75Watts