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Wednesday, January 6, 2016

Work of Air Resistance

I've been trying to derive an equation for the work of air resistances. So far I've found the equation of force of air resistance (air) in terms of distance (d).

air(d)=(PACd(W-F))/(m+PACd)

where P,A,C,W,F,m are all constants; pressure of air, area, coefficient of drag, force of weight, force of friction, mass

To find area of the curve of this graphed equation (force of area resistance X distance) requires calculus and I've not been able to find the true equation of this area.

*Note: One complication is that the area should (or perhaps not?) be found from the origin to terminal velocity. Because the acceleration changes, the d at the first instance of terminal velocity (the upper limit) must be found using the previous equation. HOWEVER, solving for air resistance at terminal velocity is (W-F), which is the y-asymptote, so unless one wants to use a variable distance, which could work, in the integration, I'd allow subtracting .001 from (W-F), then to solve for the instantaneous distance for the upper limit.



Submitted January 06, 2016 at 01:20AM by kylebrain http://ift.tt/1PNwlVX

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