Answer :

Solution :

Froude number is the ratio of inertial force to the gravitation force.

$\text{Froude }\text{ number}=\sqrt{\frac{\text{Inertia force }}{\text{Gravitational force }}}$

Froude number has the following applications :

- Used in cases of river flows, open-channel flows, spillways, surface wave motion created by boats.

- It can be used for flow classification