A stone tied to a string of length 
is whirled in a vertical circle with the other end of the string at the center. 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
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
⇒ ⇒ 
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