JEE Main 2022 Physics question
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 change in its velocity, as it reaches a position where the string is horizontal, is . The value of x is
Answer: (2)
Solution
At the lowest point the velocity is u . When the string is horizontal the speed is , directed vertically (along
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