Question

A given shaped glass tube having uniform area of cross – section is filled with water and is mounted on a rotatable shaft as shown in fig. If the tube is rotated with a constant angular velocity ω, then

• A. Water level in A will rise and fall in B
• B. Water level in both A and B will rise
• C. Water level in B will rise and will fall in A
• D. Water level remains same in both A and B.

Answer 1

Answer: (B)

Water level in both A and B will rise

Answer 2

extra force F = mrω²/2 and extra pressure = $\frac{m}{A} = \frac{mr\omega^{2}}{2A}$

Increases the level in the two.