Simple Harmonic Motion

A block of mass \(\mathrm{l} \mathrm{kg}\) is fastened to a spring of spring constant of \(100 ~\mathrm{Nm}^{-1}\). The block is pulled to a distance \(x=10 \mathrm{~cm}\) from its equilibrium position \((x=0 \mathrm{~cm})\) on a frictionless surface, from rest at \(t=0\). The kinetic energy and the potential energy of the block when it is \(5 \mathrm{~cm}\) away from the mean position is