Using Chvorinov’s rule with n=2, calculate the dimensions of an effective riser for a casting that is a 2 in. x 4 in. by 6 in. rectangular plate. Assume that the casting and riser are connected. The riser sits directly on top of the flat rectangle, with its bottom circular surface being part of the surface of casting. And the riser is cylinder of height/dimeter ratio H/D=1.5. The finished casting is what fraction of the combined weight of riser and casting?
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