Consider an idealized cylinder of cross-sectional area A moving along its axis through an idealized diffuse gas
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Consider an idealized cylinder of cross-sectional area A moving along its axis through an idealized diffuse gas of air molecules with vanishing initial velocity. Assume that the air molecules are point like and do not interact with one another. Compute the velocity that each air molecule acquires after a collision with the cylinder, assuming that the cylinder is much more massive than the air molecules. Use this result to show that the drag coefficient of the cylinder in this idealized approximation is cd = 4.
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Suppose the cylinder is traveling at a velocity v In the cylinders rest frame the air molecules are ...View the full answer
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