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y is it difficult to rotate a stone attached to a longer string than a shorter string?
In rotational dynamics, the torque required for revolution is defined as the product of the moment of inertia (I) and angular acceleration (a) i.e. t = Ia =ml2a. Here, m is the mass of stone an l is the length of string. When the string is shorter i.e. l will be smaller then less torque is required to revolve. hence, it is easier to revolve a stone by attaching it to shorter string rather than to a longer one.


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