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Mechanical Engineering - Theory of machines - Discussion

Discussion Forum : Theory of machines - Section 1 (Q.No. 25)
Theory of machines
25.
In under damped vibrating system, the amplitude of vibration
decreases linearly with time
increases linearly with time
decreases exponentially with time
increases exponentially with time
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
4 comments Page 1 of 1.
Manish katekar said:   6 years ago
Amplitude varies as per sine graph but it decreases exponentially.
(1)
AMAL said:   10 years ago
Yep, I agree with @Ankit. The amplitude varies sinusoidally.
Naga sudheer said:   10 years ago
For an under-damped system, the value of ζ can be found by examining the logarithm of the ratio of succeeding amplitudes of a system. This is called the logarithmic decrements.
Ankit agarwal said:   1 decade ago
I think there is no answer in the question because in case of under damping the amplitude of vibration varies according to sin graph.
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