question_answer

For the given situation as shown in the figure, the value of \[\theta \] to keep the system in equilibrium will be          

A) \[30{}^\circ \]

B) \[45{}^\circ \]

C) \[0{}^\circ \]

D) \[90{}^\circ \]

Correct Answer: B

Solution :

[b] in eqbm \[{{T}_{1}}Cos\theta \]   \[={{T}_{2}}=60N.\]    ?..(i) \[{{T}_{1}}\sin \theta =60N\]     ?..(ii) \[\therefore \tan \theta =1\Rightarrow \theta =45{}^\circ \]