# Need help with an equation.

1. May 3, 2013

### Onewayz

Hello, could someone please solve this for me?
Or try and help me at least...
FD = 1/4 AV^2 / FD=(1/2)pv2AC

2. May 3, 2013

### mikeph

What do you want it solved for? I don't even understand the equation(s), please use more brackets to make the division clearer.

3. May 3, 2013

### bhillyard

This needs some context.
Are FD and AC single items or the product of F & D, A & C respectively? Similarly for AV & pv.
What unknown are you trying to solve for?

4. May 3, 2013

### technician

If the second part is written as
FD = 0.5ρACv2 it is an expression to calculate friction drag (FD?) through air.
A is the cross section area, C is a drag coefficient, ρ = density of fluid (air for example)

5. May 3, 2013

6. May 3, 2013

### Onewayz

Yes , it is indeed to calculate the friction drag through the air, but i want to know the answer, kind of.
Have been trying to solve this for a long period of time and cant stop thinking about it.

7. May 3, 2013

### physwizard

lol havent u heard of lateX?

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