A stone of mass \( m \), tied to the end of a string, is whirled ar...

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A stone of mass \( m \), tied to the end of a string, is whirled around in a horizontal circle. (Neglect the force due to gravity). The length of the string is reduced gradually
P keeping the angular momentum of the stone about the

W centre of the circle constant. Then, the tension in the string is given by \( T=A r^{n} \), where \( A \) is a constant, \( r \) is the instantaneous radius of the circle. Then \( n= \).
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