A sphere is suspended by a thread of length, L. What minimum horizontal velocity has to be imparted to the ball for it to reach the height of suspension?
A
gL
B
2gL
C
gL
D
2gL
Medium
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Solution
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Correct option is D)
Applying work energy theorem between the lowest and highest points of the trajectory: mgL=21mv02
or, v0=2gL
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