Menu Close

Question-57400




Question Number 57400 by ajfour last updated on 03/Apr/19
Commented by ajfour last updated on 04/Apr/19
A small block of mass m at the top  of a solid sphere is given a gentle  tap to initiate motion. Find angle  α till where block remains in contact  with sphere. Assume no friction  between block and sphere, while  enough friction on ground such that  sphere rolls. Find also the speed of  sphere when the small block loses  contact with sphere.
$$\mathrm{A}\:\mathrm{small}\:\mathrm{block}\:\mathrm{of}\:\mathrm{mass}\:\mathrm{m}\:\mathrm{at}\:\mathrm{the}\:\mathrm{top} \\ $$$$\mathrm{of}\:\mathrm{a}\:\mathrm{solid}\:\mathrm{sphere}\:\mathrm{is}\:\mathrm{given}\:\mathrm{a}\:\mathrm{gentle} \\ $$$$\mathrm{tap}\:\mathrm{to}\:\mathrm{initiate}\:\mathrm{motion}.\:\mathrm{Find}\:\mathrm{angle} \\ $$$$\alpha\:\mathrm{till}\:\mathrm{where}\:\mathrm{block}\:\mathrm{remains}\:\mathrm{in}\:\mathrm{contact} \\ $$$$\mathrm{with}\:\mathrm{sphere}.\:\mathrm{Assume}\:\mathrm{no}\:\mathrm{friction} \\ $$$$\mathrm{between}\:\mathrm{block}\:\mathrm{and}\:\mathrm{sphere},\:\mathrm{while} \\ $$$$\mathrm{enough}\:\mathrm{friction}\:\mathrm{on}\:\mathrm{ground}\:\mathrm{such}\:\mathrm{that} \\ $$$$\mathrm{sphere}\:\mathrm{rolls}.\:\mathrm{Find}\:\mathrm{also}\:\mathrm{the}\:\mathrm{speed}\:\mathrm{of} \\ $$$$\mathrm{sphere}\:\mathrm{when}\:\mathrm{the}\:\mathrm{small}\:\mathrm{block}\:\mathrm{loses} \\ $$$$\mathrm{contact}\:\mathrm{with}\:\mathrm{sphere}.\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\: \\ $$

Leave a Reply

Your email address will not be published. Required fields are marked *