Quote:
Originally Posted by aerohead
By longer, do you mean, that if the body were elongated, and diminished in cross-section along a streamlined path?
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Your point seems to apply to any lengthened / contracting body, not one specifically with a cavity. I don't think that a box cavity works as you appear to assume it to.
I doubt that holes in the cavity extensions will make much difference, either way. But I am just guessing.