The boom AC in the figure rests in a ball and socket joint at A and is held in equilibrium by the cables BE and CD. The load applied at C. Determine the coordinates of D in the YZ plane so that the force in CD will be a minimum. Neglect the weight of the boom and cables.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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The boom AC in the figure rests in a ball and socket joint at A and is held in equilibrium by the cables BE and CD. The load applied at C. Determine the coordinates of D in the YZ plane so that the force in CD will be a minimum. Neglect the weight of the boom and cables.


Answers: y = 16 ft; z = -34.7 ft

Note:
The reaction at ball and socket joint is always represented by the x, y and z components

D
Y
E
4'|
-下:
8'
6'
300 lb
3l
B
900 lb
Transcribed Image Text:D Y E 4'| -下: 8' 6' 300 lb 3l B 900 lb
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