QJEEM22Ph8295: JEE Main 2022 Physics - Class 11 JEEM22Ph8295 Solution: A stone of mass m, tied to a string is being whirled in a…

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A stone of mass m, tied to a string is being whirled in a vertical circle with a uniform speed. The tension in the string is

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JEE Main 2022 (Online) 24th June Evening Shift Physics - Circular Motion Question 37 English Explanation

At any $θ : T - m g \cos θ = \frac{m v^{2}}{R}$

$\Rightarrow T = m g \cos θ + \frac{m v^{2}}{R}$

Since v is constant,

$\Rightarrow$ T will be minimum when cos $θ$ is minimum.

$\Rightarrow$ $θ$ = 180 $^{\circ}$ corresponds to T_minimum.

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