Question

You exert a vertical force of 72 newtons to lift a box to a height of 1.0m in a time of 2.0s . How much power s used to lift the box?

Answer 1

`\huge\boxed{\sf Power = 36 \ W}`

Step-by-step explanation:

In case of vertical force being exerted, we will use the formula of potential energy in place of work.

So,

P.E = F × h

Work = F × h

Where F is force and h is height.

Work = 72 N × 1 m

Work = 72 J

Also,

Time = 2 s

So,

`\displaystyle Power = (Work)/(Time) \\\\Power = (72)/(2) \\\\Power = 36 \ W\\\\\rule[225]{225}{2}`