A stone of mass m, tied to the end of a string, is whirled in a horizontal circle in zero gravity. The length of the string is gradually decreased without exerting any external torque. At an instant when the radius of the circle is r, the tension in the string is T=Ar−n, where A is a constant. Find the value of n (integer only)

A stone of mass m, tied to the end of a string, is whirled in a horizo

1.	A stone of mass m, tied to the end of a string, is whirled in a horizontal circle in zero gravity. The length of the string is gradually decreased without exerting any external torque. At an instant when the radius of the circle is r, the tension in the string is T=Ar−n, where A is a constant. Find the value of n (integer only)
Answer» A stone of mass $m$ , tied to the end of a string, is whirled in a horizontal circle in zero gravity. The length of the string is gradually decreased without exerting any external torque. At an instant when the radius of the circle is r, the tension in the string is $T = A r^{- n}$ , where $A$ is a constant. Find the value of n (integer only)

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