A mass is attached to a vertical spring

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

Problem

0.25\,\text{kg}

mass is attached to a vertical spring. The system completes

40

oscillations in

50\,\text{s}

. The spring constant

k

is approximately (a)

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

(b)

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

(c)

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

(d)

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