Question
Download Soln PDFA stone of mass “m” at the end of a string of length “L” is whirled in a vertical circle at a constant speed. The tension in the string will be maximum when the stone is
Answer (Detailed Solution Below)
Detailed Solution
Download Soln PDF
Concept:
at,
Let the string makes an angle θ with the positive vertical axis, then tension is given as
\(T = -\;mg\cos θ + \frac{{m{v^2}}}{r}\)
At bottom of the circle, string makes an angle 180° with a positive vertical axis,
⇒ θ = 180° ⇒ cos θ = -1
⇒ \(T = mg + \frac{{m{v^2}}}{r}\)
Therefore, at the bottom of the circle, centrifugal force and the weight are added.
So, it will be the point of maximum tension.
Last updated on May 28, 2025
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