Engineering Board Exam Reviewer · Applications: Electric Circuits and Vibrations · medium

A 2-kg mass hangs on a spring with k=50 N/m and oscillates without damping. Find the period of oscillation.

  1. 0.25 s
  2. 0.63 s
  3. 62.83 s
  4. 1.26 s

Answer

D. 1.26 s

Solution

=sqrt( km)=sqrt(50/2)=5 rad/s. The period is T=2π/ =2π/5 1.26 s.

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