Civil Engineering - UPSC Civil Service Exam Questions - Discussion
Discussion Forum : UPSC Civil Service Exam Questions - Section 8 (Q.No. 23)
23.
If the magnitude of the resultant of two forces F and 2F acting at a point O is 50 N, and the included angle between F and 2F is 90°, then what is the magnitude of F ?
Discussion:
1 comments Page 1 of 1.
Mesbah Ullah said:
4 years ago
R2 = F2+(2F)2 + 2(Fx2FxCOSQ), COS90=0.
50 x 50 = 5F2.
F= √(10X50) = 10 √(5).
50 x 50 = 5F2.
F= √(10X50) = 10 √(5).
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