A stone tied to a string of length L is whirled in a vertical circle with the other end…
Physics · JEE Advanced · NTA Exams — Kinematics
A stone tied to a string of length L is whirled in a vertical circle with the other end of the string at the centre. At a certain instant of time, the stone is at its lowest position, and has a speed u. The magnitude of the change in its velocity as it reaches a position where the string is horizontal is
Answer
(C)
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