A liquid is kept in a cylindrical vessel which is rotated along its axis. The liquid rises at the sides. If the radius of the vessel is r and the speed of revolution is n rotations/second, find the difference in height of the liquid at the centre of vessel and its sides.

A liquid is kept in a cylindrical vessel which is rotated along its ax

1.	A liquid is kept in a cylindrical vessel which is rotated along its axis. The liquid rises at the sides. If the radius of the vessel is r and the speed of revolution is n rotations/second, find the difference in height of the liquid at the centre of vessel and its sides.
Answer» `h=(2PI^(2)N^(2)R^(2))/(G)` `h=(4pi^(2)n^(2)r^(2))/(g)` `h=(pi^(2)r^(2)n^(2))/(g)` `h=(pi^(2)r^(2)n^(2))/(2g)` Answer :A