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Potential Energy of a System of Multiple Point Charges

The potential...

Question

The potential energy of a particle oscillating along x-axis is given as $U = 20 + (x - 2)^{2}$ where U is in joules and x in meters. Total mechanical energy of the particle is 36 J. Maximum kinetic energy of the particle is

A

24 J

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B

36 J

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C

16 J

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D

20 J

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Solution

The correct option is C 16 J
$K_{m a x} = E - U_{m i n} = 36 - 20 = 16 J$

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