3 ms·
The frontal area of two spheres of the same mass will be determined by the sphere's density, and that drives the air resistance. If frontal area didn't matter
by jpollock 5y ago
The frontal area of two spheres of the same mass will be determined by the sphere's density, and that drives the air resistance.
If frontal area didn't matter to drag, wouldn't all spheres would have the same drag coefficient?
From that page:
Cd = D/(rAV^2/2) where A is frontal area.
What am I missing?
- dragontamer 5y ago> Cd = D/(rAV^2/2) where A is frontal area. You're citing a page that uses the word "density" differently than you do. "D" is density-of-the-air. The density you're talking about appears to be the density-of-the-sphere.
- bernulli 5y agoYou’re missing nothing, you’re correct.