question_answer

    In the adjoining figure, AB,BC and AC are light metallic rods hinged at B. The tension on rod BC is

A)  150 N                                   

B)  180 N

C)  500 N                                   

D)  \[166\frac{1}{3}N\]

Correct Answer: C

Solution :

                It is clear from figure, that \[T\cos \theta =300N\] \[\cos \theta =\frac{3}{5}\] \[\therefore \]  \[T=300\times \frac{5}{3}=500\,N\]