JEE Main 202227 Jun, Evening shiftPhysicsMediumKinematics177× since 2002
A stone tide to a spring of length L is whirled in a vertical circle with the other end of the spring 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 -