Motion in a Plane - Result Question 49
52. A stone is tied to a string of length and 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 position and has a speed . The magnitude of the change in velocity as it reaches a position where the string is horizontal ( being acceleration due to gravity) is
[2004]
(a)
(b)
(c)
(d)
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Answer:
Correct Answer: 52. (b)
Solution:
- (b)
or,
or,