Question

An object performing S.H.M. with mass of 0.5 kg, force constant 10N/m and amplitude 3cm, What is the total energy of object?
(Ans : E = 0.0045J )

Answer 1

we know, total energy of object is given by $T.E=\frac{1}{2}\kappa A^2$
where $\kappa$ is the force constant and A is the amplitude of object.

given,
$\kappa=10N/m$
$A=3cm=3\times10^{-2}m$

so, T.E = 1/2 × 10 × (3 × 10^-2)²

= 1/2 × 10 × 9 × 10^-4

= 0.0045 J