Why is it easier to revolve a stone using a shorter string than a longer string?

To rotate a system, torque is required. Torque is given by the formula

Torque = Force * Perpendicular Distance

Here, the perpendicular distance is the length of the string.

As torque is directly proportional to the perpendicular distance, it becomes evident that longer the string, more torque is required to rotate it. Hence we can conclude that it is easier to revolve a stone by attaching it to a shorter string.

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