A stone tied to a string of length l is whirled in a vertical circle with the other end of the string as the centre. At a certain instant of time, the stone is at its lowest point and has a speed u. The magnitude of change in velocity as it reaches its highest point of the circle is

A stone tied to a string of length l is whirled in a vertical circle w

1.	A stone tied to a string of length l is whirled in a vertical circle with the other end of the string as the centre. At a certain instant of time, the stone is at its lowest point and has a speed u. The magnitude of change in velocity as it reaches its highest point of the circle is
Answer» A stone tied to a string of length $l$ is whirled in a vertical circle with the other end of the string as the centre. At a certain instant of time, the stone is at its lowest point and has a speed $u$ . The magnitude of change in velocity as it reaches its highest point of the circle is

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A stone tied to a string of length l is whirled in a vertical circle with the other end of the string as the centre. At a certain instant of time, the stone is at its lowest point and has a speed u. The magnitude of change in velocity as it reaches its highest point of the circle is

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