A) maximum potential energy when the torque is maximum
B) zero potential energy when the torque is maximum
C) zero potential energy when the torque is minimum
D) minimum potential energy when the torque is maximum
Correct Answer: B
Solution :
\[PE=-PE\cos \theta \] \[\tau =PE\sin \theta \] \[{{\tau }_{\max }}\] when \[\theta ={{90}^{o}}\]PE = 0
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