A) 12 kg and 13 kg
B) 5 kg and 5 kg
C) 5 kg and 12 kg
D) 5 kg and 13 kg
Correct Answer: C
Solution :
If three coplanar forces are in equilibrium, then each force is proportional to the sine of the angle between the other two forces. \[\because \] \[OC=CA=CB\Rightarrow \angle AOC=\angle OAC\] and \[\angle COB=\angle OBC\] \[\therefore \] \[\sin \theta =\sin A=\frac{5}{13}\]and \[\cos \theta =\frac{12}{13}\]You need to login to perform this action.
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