A spring stretches by when a mass is hung from it and is in equilibrium

PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

A spring stretches by

4.0\,\text{cm}

when a

2.0\,\text{kg}

mass is hung from it and is in equilibrium. Find the natural angular frequency of small vertical oscillations of the mass (take

g = 9.8\,\text{m\,s}^{-2}

). (a)

9.8\,\text{rad\,s}^{-1}

(b)

7.85\,\text{rad\,s}^{-1}

(c)

15.7\,\text{rad\,s}^{-1}

(d)

31.4\,\text{rad\,s}^{-1}