A slender 9 lb rod can rotate in a vertical plane about a pivot at B. A spring of constant k=30 lb/ft and of unstretched length 6 in. is attached to the rod as shown. Knowing that the rod is released from rest in the position shown, determine its angular velocity after it has rotated through 90°.

A slender 9 lb rod can rotate in a vertical plane about a pivot at B. A spring of constant k=30 lb/ft and of unstretched length 6 in. is attached to the rod as shown. Knowing that the rod is released from rest in the position shown, determine its angular velocity after it has rotated through 90°.

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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Question

A slender 9 lb rod can rotate in a vertical plane about a pivot at B. A spring of constant k=30
lb/ft and of unstretched length 6 in. is attached to the rod as shown. Knowing that the rod is
released from rest in the position shown, determine its angular velocity after it has rotated
through 90°.
24 in.
D.
5 in.
C.
-14 in.

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