Physics - SHM Question with Solution | TestHub

Both assertion and reason are true but reason is not the correct explanation of assertion. P.E. $=\frac{1}{2}m{\omega }^2{y}^2$ and K.E. $=\frac{1}{2}m{\omega }^2\left(a^2-y^2\right)$. The variation of both potential energy and kinetic energy is proportional to $y^2$. Therefore displacement versus P.E. or K.E. graph is a parabola (because parabolic equation is $z=4a{u}^2$ ).