Question

A given shaped glass tube having uniform cross-section is filled with water and is mounted on a rotatable shaft as shown in figure. If the tube is rotated with a constant angular velocity $\omega$, then

• A. water levels in both section $A$ and $B$ go up
• B. water level in section $A$ goes up and that in $B$ comes down
• C. water level in section $A$ comes down and that in $B$ it goes up
• D. water level remain same in both sections

Answer 1

The correct option is A water levels in both section $A$ and $B$ go up

Water level in both $A$ and $B$ will go up. The pressure difference thus created will provide the necessary centripetal force for the water body to rotate around the vertical axis.