The uniform semicircular bar of radius r = 120 mm and mass m = 3.2 kg rotates freely about a horizontal axis through the pivot O. T bar is initially held in position 1 against the action of the torsional spring and then suddenly released. Determine the spring stiffnes which will give the bar a counterclockwise angular velocity w = 4.3 rad/s when it reaches position 2, at which the spring is undeform kT 2 A' (0)

The uniform semicircular bar of radius r = 120 mm and mass m = 3.2 kg rotates freely about a horizontal axis through the pivot O. T bar is initially held in position 1 against the action of the torsional spring and then suddenly released. Determine the spring stiffnes which will give the bar a counterclockwise angular velocity w = 4.3 rad/s when it reaches position 2, at which the spring is undeform kT 2 A' (0)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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Question

The uniform semicircular bar of radius r = 120 mm and mass m = 3.2 kg rotates freely about a horizontal axis through the pivot O. The
bar is initially held in position 1 against the action of the torsional spring and then suddenly released. Determine the spring stiffness kt
which will give the bar a counterclockwise angular velocity w = 4.3 rad/s when it reaches position 2, at which the spring is undeformed.
KT
m
1
2
A'
(0)

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