+1 vote
in Machine Dynamics by (34.3k points)
A body of mass 20 kg is suspended from a spring which deflects 20mm under this load. Calculate the frequency of free vibrations in Hz.

(a) 3.5

(b) 5

(c) 6

(d) 7

The question was posed to me in an online quiz.

My question is from Damping Factor & Magnification Factor in division Longitudinal and Transverse Vibrations of Machine Dynamics

1 Answer

0 votes
by (38.6k points)
Correct choice is (a) 3.5

Explanation: Frequency of free vibrations is given by (1/2π)√(g/d)

substituting the value, we get

f = 3.5 Hz.

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