8. A circular disk of mass m and radius a is free to rotate in a vertical plane about a smooth fixed horizontal axis passing through the point A on a disc, distanta from O, the centre of the disc. 2 A particle of mass 2m is attached to the circumference of the disc at thc end of the diameter through A. 21 (a) Show that the moment of incrtia of the system is nu? and state the radius of gyration of
8. A circular disk of mass m and radius a is free to rotate in a vertical plane about a smooth fixed horizontal axis passing through the point A on a disc, distanta from O, the centre of the disc. 2 A particle of mass 2m is attached to the circumference of the disc at thc end of the diameter through A. 21 (a) Show that the moment of incrtia of the system is nu? and state the radius of gyration of
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Answer Q8a
Transcribed Image Text:8. A circular disk of mass m and radius a is free to rotate in a vertical plane about a smooth fixed
horizontal axis passing through the point A on a disc, distant a
A particle of mass 2m is attached to the circumference of the disc at the end of the diameter
through A.
from O, the centre of the disc.
2
21
(a) Show that the moment of inertia of the system is
-nu and state the radius of gyration of
4
the system.
(b) If the system is released from rest in a horizontal position to rotate in the plane, find the
angular velocity of the system when OA is vertical.
(c) When at rest with OA vertical, the system is slightly disturbed through an angle a to the
vertical to perform small oscillations about its position of stable equilibrium. Show that the
3a
and state the period of the cquivalent
8g
period of small oscillations is given by T 27,
simple pendulum.
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