State whether the following statement is true or false: The potential energy of a body of mass $1\ kg$ kept at a height of $1\ m$ is $1\ J$.

Given statement: "The potential energy of a body of mass $1\ kg$ kept at a height of $1\ m$ is $1\ J$."

Here, mass $m=1\ kg$

Height $h=1\ m$

Gravitational acceleration $g=9.8\ m/s^2$        [On earth]

Therefore, the potential energy of the body $U=mgh$

$=1\ kg\times9.8\ m/s^2\times 1\ m$

$=9.8\ J$

Therefore, the given statement is false.

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Updated on: 10-Oct-2022

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