The disc of a torsional pendulum has a moment of inertia of 600 kg – cm² and is immersed in a viscous fluid. The brass shaft having 10 cm diameter & 40 cm long is attached to it. When the pendulum is vibrating, the observed amplitudes on the same side of the rest position for successive cycles are 9°, 6°, and 4°. Determi ne (a) logarithmic decrement (b) damping torque at unit velocity, and (c) the periodic time of vibration Assume for the brass shaft, G = 4.41 x 101º N /m². What would the frequency be, if the disc is removed from the viscous fluid?

The disc of a torsional pendulum has a moment of inertia of 600 kg – cm² and is immersed in a viscous fluid. The brass shaft having 10 cm diameter & 40 cm long is attached to it. When the pendulum is vibrating, the observed amplitudes on the same side of the rest position for successive cycles are 9°, 6°, and 4°. Determi ne (a) logarithmic decrement (b) damping torque at unit velocity, and (c) the periodic time of vibration Assume for the brass shaft, G = 4.41 x 101º N /m². What would the frequency be, if the disc is removed from the viscous fluid?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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