Question

If a spring of mass 30kg has a spring constant of 15N/m, then its time period is ___________

(a) 2πs

(b) 2√2 πs

(c) 2√2π s

(d) 2√2 s

This question was posed to me in quiz.

Question is from Simple Harmonic Oscillation topic in section Oscillations of Engineering Physics I

Answer 1

Right choice is (b) 2√2 πs

To elaborate: T=2π√(m/k)

T=2π√(30/15)=2π√2 s.