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A body of $2 kg$ is raised to $5 m$ . The work done is ____ $J$ .

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Detailed Solution

A body of

2 kg

is raised to

5 m

. The work done is

100 J

.
Given,
Mass of body,

m = 2 kg

Height to which the body is raised,

h = 5 m

Potential energy is the energy possessed by a body by virtue of its position. Potential energy in moving something from one place to another is the work done.
So,

Potential energy = work done

It can also be written as

Potential energy = mgh

Here, acceleration due to gravity,

g = 10 m / s^{2}

On substituting the values, we get the work done as

W = 2 \times 10 \times 5

\Rightarrow W = 100 J

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