So I know that the total mechanical energy is E=0.5m*v^2+ 0.5* k*x^2(adsbygoogle = window.adsbygoogle || []).push({});

But sometime I see it written as E=0.5m*v^2+ 0.5* k*A^2

What is the difference?

Here is a question If the amplitutide of the oscillations is doubled the mechanical energy of the system:

Doubles Does not change Other answer :

MY ANSWER does not change. is this correct?

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# Homework Help: Total mechanical energy of oscillating system?

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