When the displacement of a mass on a spring is 12 A, what percentage of the energy is kinetic energy? At what displacement, as a fraction of A, is the energy half kinetic and half potential?

75%

Explanation:

x = Displacement of spring =

k = Spring constant

Total energy of the spring is

Elastic potential energy is given by

Total energy is given by

The percentage will be

The required percentage is 75%

According to the given condition

So, the energy is half when displacement is

the entire statement is true and correct.  

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