MCQOPTIONS
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MCQOPTIONS
| 1. |
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] [CPMT 1991] |
| A. | \[v=\sqrt{2gR}\] |
| B. | \[v=\sqrt{gR}\] |
| C. | \[v=\frac{g}{R}\] |
| D. | \[v=\sqrt{{{g}^{2}}R}\] |
| Answer» C. \[v=\frac{g}{R}\] | |