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The torsional pendulum with a disc of moment of inertia $J = 0.05 \ kg-m^2$ immersed in a viscous fluid is shown in figure. During vibrations of pendulum,
1 Answer
written 5.4 years ago by |
The observed amplitudes on the same side of the neutral axis for successive cycles are found to decay 50% of the initial value.
Determine:
1] Logarithmic decrement.
2] Damping torque per unit velocity.
3] The periodic time of vibration.
4] The frequency when the disc is removed from the fluid. …