Question

A liquid is kept in a cylindrical jar, which is rotated about the cylindrical axis. The liquid rises at its sides. The radius of the jar is `r` and speed of rotation is `Omega` the difference in height at the centre and the sides of the jar is
A. `(r^(2)omega^(2))/(g)`
B. `(r^(2)omega^(2))/(2g)`
C. `(g)/(r^(2)omega^(2))`
D. `(2g)/(r^(2)omega^(2))`

Answer 1

Correct Answer - B
Difference in potential energy `u=` rotational
Kinetic energy `becausemg(h_(1)-h_(2))=(1)/(2)Iomega^(2)`