Two identical springs

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

Problem

Two identical springs, each of force constant

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

, are attached in parallel to a

0.50\,\text{kg}

mass that is free to oscillate along a straight line. The time period of the resulting simple harmonic motion is closest to (a)

0.80\,\text{s}

(b)

0.57\,\text{s}

(c)

0.40\,\text{s}

(d)

0.28\,\text{s}