Physics

Problem

A horizontal spring–mass oscillator has total mechanical energy

0.80\,\text{J}

. At an instant when its kinetic energy is

0.20\,\text{J}

, the spring constant is

400\,\text{N\,m}^{-1}

. Calculate the magnitude of displacement of the mass from equilibrium. a)

6.3\,\text{cm}

3.9\,\text{cm}

5.5\,\text{cm}

3.2\,\text{cm}