Physics-
General
Easy
Question
A small disc is on the top of a hemisphere of radius
. What is the smallest horizontal velocity
that should be given to the disc for it to leave the hemisphere and not slide down it? [There is no friction]
The correct answer is: ![v equals square root of g R end root](data:image/png;base64,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)
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