The total energy of a particle,executing simple harmonic motion is

Starting from the origin,a body oscillates simple harmonically with a period of $2 \ s$. After what time will its kinetic energy be $75\%$ of the total energy?

The total mechanical energy of a particle executing simple harmonic motion is $E$. When the displacement is half the amplitude,its kinetic energy will be

The potential energy of a simple harmonic oscillator when the particle is half way to its end point is (where $E$ is the total energy)

The total energy of a particle executing $S.H.M.$ is proportional to

$A$ particle is executing simple harmonic motion with amplitude $A$. The ratio of the kinetic energies of the particle when it is at displacements of $\frac{A}{4}$ and $\frac{A}{2}$ from the mean position is