Question

A body of mass 10kg is at the height of 2m.It is raised further to a height of 4m.Calculate the increase in the gravitational potential energy of the body.(take g=10N/kg).
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Answer 1

Explanation:

The gravitational potential energy

Ep = mgh

given

m = 10 kg

g = 10 m/s^2

let's look at the first case.

ie, when h = 2m

Ep1 = 10 x 10 x 2 = 200

second case

ie, when h = 4m

Ep2 = 10 x 10 x 4 = 400

so change In potential energy

Ep2 - Ep1 = 400 - 200 = 200

so the gravitational potential energy increase by the number 200

Answer 2

Explanation:

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