A 5-kg quarter of a circular disk with a radius of 500 mm and a radius of gyration kç = 0.25 m is pinned at O. If it is released from rest with the left edge at a vertical position (theta is zero) as shown below, find: a) Its initial angular acceleration b) The reaction force at O in -y coordinate system c) Its angular velocity when theta reaches 45 degrees (G is the center of gravity)

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A 5-kg quarter of a circular disk with a radius of 500 mm and a radius of gyration kg = 0.25 m is pinned at O. If it is released from rest with
the left edge at a vertical position (theta is zero) as shown below, find:
a) Its initial angular acceleration
b) The reaction force at O in -y coordinate system
c) Its angular velocity when theta reaches 45 degrees
(G is the center of gravity)
4R
Зп
R !
G
4R
R
y
0 = 0
Transcribed Image Text:A 5-kg quarter of a circular disk with a radius of 500 mm and a radius of gyration kg = 0.25 m is pinned at O. If it is released from rest with the left edge at a vertical position (theta is zero) as shown below, find: a) Its initial angular acceleration b) The reaction force at O in -y coordinate system c) Its angular velocity when theta reaches 45 degrees (G is the center of gravity) 4R Зп R ! G 4R R y 0 = 0
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