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Relation between Work Done and PE

Potential ene...

Question

Potential energy curve a of a body of mass $m = 2 k g$ is shown in the figure, it is released from rest at point A. Maximum distance covered by it on the positive $x -$ axis from the origin till it momentarily comes to rest is

A

1 m

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B

2 m

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C

\frac{3}{2} m

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D

\frac{1}{2} m

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Solution

The correct option is A $1 m$
At $O$ all its $P . E (16 J)$ is converted to $K . E$ .
It comes to momentary rest, after all the $K E$ at $O$ is again converted to $P . E$ of $16 J$ at $x$ .
Slope = $\frac{16}{x} = \frac{32}{2}$
$\Rightarrow x = 1 m$

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