A cylindrical vessel containing a liquid is rotated about its axis so that the liquid rises at its sides as shown in the figure. The radius of vessel is $5\, cm$ and the angular speed of rotation is $\omega\; rad \,s^{-1}$. The difference in the height, $h($ in $cm )$ of liquid at the centre of vessel and at the side will be
$\frac{25 \omega^{2}}{2 g}$
$\frac{2 \omega^{2}}{5 g}$
$\frac{5 \omega^{2}}{2 g}$
$\frac{2 \omega^{2}}{25 g}$
Explain why roof of building flyout during stormy wind.
In the diagram shown, the difference in the two tubes of the manometer is $5\, cm$, the cross section of the tube at $A$ and $B$ is $6\, mm^2$ and $10\, mm^2$ respectively. The rate at which water flows through the tube is ........ $ cc/s$ $(g\, = 10\, ms^{-2})$
Give the formula for measurement of velocity of fluid in a broader part of venturi-meter.
An $ L-$ shaped glass tube is just immersed in flowing water such that its opening is pointing against flowing water. If the speed of water current is $v$, then
The weight of an aeroplane flying in air is balanced by