The spring is uncompressed when the uniform slender bar is in the vertical position shown. Determine the initial angular acceleration a of the bar when it is released from rest in a position where the bar has been rotated clockwise 29° from the position shown. Neglect any sag of the spring, whose mass is negligible. The angular acceleration is positive if counterclockwise and negative if clockwise. The mass m of the bar is 25 kg, the length I is 275 mm and the spring constant k is 640 N/m. m 4 4 IG 4. B

The spring is uncompressed when the uniform slender bar is in the vertical position shown. Determine the initial angular acceleration a of the bar when it is released from rest in a position where the bar has been rotated clockwise 29° from the position shown. Neglect any sag of the spring, whose mass is negligible. The angular acceleration is positive if counterclockwise and negative if clockwise. The mass m of the bar is 25 kg, the length I is 275 mm and the spring constant k is 640 N/m. m 4 4 IG 4. B

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

The spring is uncompressed when the uniform slender bar is in the vertical position shown. Determine the initial angular
acceleration a of the bar when it is released from rest in a position where the bar has been rotated clockwise 29° from the position
shown. Neglect any sag of the spring, whose mass is negligible. The angular acceleration is positive if counterclockwise and negative
if clockwise. The mass m of the bar is 25 kg, the length / is 275 mm and the spring constant k is 640 N/m.
A
m
4
G
B
Answer: a =
i
rad/s?
1/1

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