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 :

Options

A. water levels in both sections A and B go up
B. water level in section A goes up and that in section B comes down
C. water level in section A comes down and that in B goes up
D. water level remains the same in both the sections.

Answer

A

Explanation

Due to rotation of tube, centrifugal forces` (F_(A) and F_(B))` act on the sections A and B.
`F_(A)=m(L)omega^(2)`
`F_(B)=m(2L)omega^(2)`
Therefore, water level rises in both the sections A and B.