Simple Harmonic Motion

An object of mass \(0.2 \mathrm{~kg}\) executes simple harmonic motion along \(x\) axis with frequency of \(\left(\frac{25}{\pi}\right) \mathrm{Hz}\). At the position \(x=0.04 \mathrm{~m}\) the object has kinetic energy \(0.5 \mathrm{~J}\) and potential energy \(0.4 \mathrm{~J}\). The amplitude of oscillation is ________ \(\mathrm{cm}\).