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Sahay Sir > Question Answers > Cengage NEET by C.P Singh > Part 1 > Chapter 9 - Circular Motion > A small disc is on the top of a hemisphere of radius R. What is the smallest horizontal velocity v that should be given to the disc for it to leave the hemisphere and not slide down it?[There is no friction]

A small disc is on the top of a hemisphere of radius R. What is the smallest horizontal velocity v that should be given to the disc for it to leave the hemisphere and not slide down it?[There is no friction]

A block is released on a smooth track from A. The minimum value of h so that the block will complete the loop is