Velocity and Vorticity of a Tornado Calculation

[mep12ah]

Homework Statement

A tornado:

of d = 2r = 0.9 km

r = radius

vortic ity 9 rad/s at altitude 0.8 km

What is the velocity at ground level given 2*pi*r = 95 m at that level.

If someone could just guide me on what the relevant equations are. I am revisiting the background material but any insight is appreciated.

 

[HallsofIvy]

Do you know how to find the circumference of a circle or radius r?

 

[mep12ah]

Do you know how to find the circumference of a circle or radius r?

Yes.