- #1

Chica1975

- 63

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## Homework Statement

a ventilation fan has blades has 0.25m in radius rotating at 20rpm. what is the tangential speed of each blade tip?

## Homework Equations

Vtangential - Omega *r

Conversion to radians is 2Pie radians

## The Attempt at a Solution

I have tried everything I know and I am really hating physics right now. I can't seem to get this out.

I converted the rpm to radians like this

20(2pierad)*60

then I used the Vtangential equation

Its out - can someone please shed some light. I can't wait for the exam on Tuesday to be over. I have a teacher who can't even speak proper english let alone teach physics.

Thank you!