Plz solve this

Dear Student,


For equilibrium,
                          Total upward force = Total downward force
or,                                      $2T \cos \theta =W$

or,                                              $T=\frac{W}{2 \cos \theta }$

For maximum tension (T), $\cos \theta$ will be minimum. It means $\theta$ will maximum. Thus, the angle between the arm should be ${120}^o$.
option(4) is correct. Regards