A vertical spring stores of mechanical energy while oscillating with a mass attached

PHYSICS · Subjective · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

A vertical spring stores

0.90\,\text{J}

of mechanical energy while oscillating with a mass attached. The spring constant is

30\,\text{N}\!/\!\text{m}

. Determine the amplitude of the oscillation.