The maximum power can be transmitted when the centrifugal tension is

Question

         The power transmitted by a belt is dependent on the centrifugal effect in the belt. The maximum power can be transmitted when the centrifugal tension is                                          

1. 1/3 of tension (T₁) on the tight side
2. 1/3 of total tension (T_t) on the tight side
3. 1/3 of the tension (T₂) on the slack side
4. 1/3 of sum of tension T₁ i.e. $\frac{1}{3}\left ( T_{1}+T_{2} \right )$