Find the minimum torque that must be applied to second hand

Reference no: EM13315324

A clock has a second hand whose tip rubs against the inside of the glass cover. If the frictional force between the glass cover and the tip of the second hand is 0.0020 N and the length of the hand is 9.0 cm, what is the minimum torque that must be applied to the second hand if the clock is not to be stopped?

Reference no: EM13315324

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