Question

If ti takes 50 seconds to lift 10 newtons of books to a height of 7 meters, calculate the power required

Answer 1

`\huge\boxed{\sf P = 1.4\ W}`

Step-by-step explanation:

Given data:

Time = t = 50 sec

Force = F = 10 N

Height = 7 m

Required:

Power = P = ?

Formula:

`\displaystyle P =(W)/(t)`

Solution:

We know that,

Work = Force × distance

Here, distance is covered in the form of height.

So,

Work = Force × Height

Work = 10 × 7

W = 70 Joules

Now,

P = W/t

P = 70 / 50

P = 1.4 W

`\rule[225]{225}{2}`