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The differential equation of the sim...

The differential equation of the simple harmonic motion given by ` x=A cos ( n t + alpha )` is

A

`(d^2x)/(dt^2)-n^2x=0`

B

`(d^2)/(dt^2)+n^2 x=0`

C

`(dx)/(dt)-(d^2x)/(dt^2)=0`

D

`(d^2 x)/(dt^2)-(dx)/(dt)+nx =0`

Text Solution

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The correct Answer is:
B
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