4-81. Two couples act on the frame. If d = 4 ft, determine the resultant couple moment. Compute the result by resolving each force into x and y components and (a) finding the moment of each couple (Eq. 4–13) and (b) summing the moments of all the force components about point B.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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4-81. Two couples act on the frame. If d = 4 ft, determine
the resultant couple moment. Compute the result by
resolving each force into x and y components and (a) finding
the moment of each couple (Eq. 4–13) and (b) summing the
moments of all the force components about point B.
-2 ft
3 ft
| 50 lb
30°
B
1 ft
| 30°
50 lb
80 lb
3 ft
80 lb
Transcribed Image Text:4-81. Two couples act on the frame. If d = 4 ft, determine the resultant couple moment. Compute the result by resolving each force into x and y components and (a) finding the moment of each couple (Eq. 4–13) and (b) summing the moments of all the force components about point B. -2 ft 3 ft | 50 lb 30° B 1 ft | 30° 50 lb 80 lb 3 ft 80 lb
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