Tagged Questions
0
votes
2answers
141 views
Is it reasonable for a heavy door to “open by itself” (ie from differences in air pressure) if it had already been slightly ajar?
If you consider a basically uniform massive door (say, 300 N) where there is some coefficient $\mu_{s,k}$ of static and kinetic friction between the thing on the inside of the door, and where the ...
0
votes
0answers
84 views
Aerodynamic drag on a cannonball?
I'm trying to build a ballistics simulation where I shoot a cannonball. I want to allow for drag and am trying to work out the math to do so.
I can work the drag out using $F = Cd\times S\times ...
5
votes
3answers
834 views
Including air resistance, what is the escape velocity from Earth?
Including air resistance, what is the escape velocity from the surface of the earth for a free-flying trajectile?
