engineering recuitment AAI JE Technical Mock Test 2020-21 Mechanical Vibrations Forced Vibration Damping Coefficient and Damping Ratio
The damping ratio for a viscously damped spring mass system, governed by the relationship is \(m\frac{{{d^2}x}}{{d{t^2}}} + c\frac{{dx}}{{dt}} + kx = F\) given by
1
\(\sqrt {\frac{c}{{mk}}} \)
2
\(\frac{c}{{2\sqrt {km} }}\)
3
\(\frac{c}{{\sqrt {km} }}\)
4
\(\sqrt {\frac{c}{{2mk}}} \)