A light rigid rod of length l is hinged ...

A light rigid rod of length l is hinged at one end and it is free to rotate in a vertical plane. A particle of mass m is sattached to anothr and of the rod. The particle is released from rest at its highest point. Select the correct statement out of the following

Tension in the rod is zero when it makes an angle of `cos^(-1)""((1)/(3))` with the vertical

Tension in the rod is zero when it makes an angle of `cos^(-1)""((2)/(3))` with the vertical

Speed of partical of mass m is `sqrt((2)/(3)gl)` when the tension in the rod is zero

Speed of particle of mass m is `sqrt((4)/(3)gl)` when the tension in the rod is zero

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B, C

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