Question

5. If it takes 50 seconds to lift 10 Newtons of books to a height of 7 meters, calculate the power

required

Answer 1

P = 1.4 Watts

Step-by-step explanation:

Given that,

Weight of books, W = 10 N

It takes 50 seconds to lift the books to a height of 7m. We need to find the power required. Let the power be P. It can be done as follows :

`P=(W)/(t)\\\\P=(mgh)/(t)\\\\P=(10* 7)/(50)\\\\P=1.4\ W`

So, the power required is 1.4 watts.