engineering recuitment HPCL Engineer Mock Test 2024 Mechanical Vibrations Damped Free Vibration Damping Coefficient and Damping Ratio
Assuming small oscillation in a free vibration of the pendulum as shown in figure. Determine the critical damping coefficient of this system. Assume the rod is massless.
1
\(\sqrt {m{l^3}\left( {kl + mg} \right)} \)
2
\(l\sqrt {m\left( {kl + mg} \right)} \)
3
\(2\sqrt {m{l^3}\left( {kl + mg} \right)} \)
4
\(2\sqrt {ml\left( {k + mg} \right)} \)