UPSC Civil Service Exam Questions

Q1: 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 ?

A F = 10 N

B
F = 502 N

C
F = 252 N

D
F = 105 N

ANS:D -

F = 105 N

R2 = F2+(2F)2 + 2(Fx2FxCOSQ), COS90=0.
50 x 50 = 5F2.

F= √(10X50) = 10 √(5).



img not found
img

For help Students Orientation
Mcqs Questions

One stop destination for examination, preparation, recruitment, and more. Specially designed online test to solve all your preparation worries. Go wherever you want to and practice whenever you want, using the online test platform.