Wind drag, drag coefficient

[520]

Homework Statement

angled piece of sheet set at various distances to a set fan, the sheet is placed on scales and they measure the amount of force the wind creates. There are noticeable differences at the different distances and angles.

Homework Equations

wind force and wind pressure:
F=A*P*Cd
Wind pressure: 1/2 * (air density) * wind speed ^2 * shape factor

The Attempt at a Solution

I have no Idea what to do, I've tried of how I think it is done and it is all wrong, if someone can explain the constants and how to calculate everything that would be great

 

[jbsteele]

. The equation for wind force is F=A*P*Cd, where A is the area of the sheet, P is the wind pressure, and Cd is the drag coefficient. The equation for wind pressure is 1/2 * (air density) * wind speed ^2 * shape factor, where air density is the density of the air, wind speed is the speed of the wind, and shape factor is a factor that depends on the shape of the object. To calculate the wind force, you need to know the area of the sheet, the wind pressure, and the drag coefficient. You can calculate the wind pressure by using the equation given above. The drag coefficient depends on the shape and size of the object and can be found in tables.