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When there is a reduction in amplitude over every...

When there is a reduction in amplitude over every cycle of vibration, then the body is said to have

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asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

When there is a reduction in amplitude over every cycle of vibration, then the body is said to have

(a) free vibration

(b) forced vibration

(c) damped vibration

(d) none of the mentioned

The question was posed to me during an interview.

I'm obligated to ask this question of Vibratory Motion in chapter Longitudinal and Transverse Vibrations of Machine Dynamics

machine dynamics
longitudinal and transverse vibrations
vibratory motion

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answered Oct 15, 2022 by Fred (38.6k points)

The correct choice is (c) damped vibration

The best explanation: When no external force acts on the body, after giving it an initial displacement, then the body is said to be under free or natural vibrations. The frequency of the free vibrations is called free or natural frequency.

When there is a reduction in amplitude over every cycle of vibration, the motion is said to be damped vibration.

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