4-78. Two couples act on the beam as shown. Determine the magnitude of F so that the resultant couple moment is 300 lb ft counterclockwise. Where on the beam does the resultant couple act? 5 -F F 5 4 1.5 ft 200 lb 200 lb

4-78. Two couples act on the beam as shown. Determine the magnitude of F so that the resultant couple moment is 300 lb ft counterclockwise. Where on the beam does the resultant couple act? 5 -F F 5 4 1.5 ft 200 lb 200 lb

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter2: Basic Operations With Force Systems

Section: Chapter Questions

Problem 2.79P: The arm ABCD of the industrial robot lies in a vertical plane that is inclined at 40 to the...

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Question

4-78. Two couples act on the beam as shown. Determine
the magnitude of F so that the resultant couple moment is
300 lb ft counterclockwise. Where on the beam does the
resultant couple act?
●
5
-F
F
4 ft
5
3
1.5 ft
Probs. 4-77/78
200 lb
200 lb

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