tessadummer0033
22.10.2019 •
Physics
Molten metal is poured into the pouring cup of a sand mold at a steady rate of 400 cm3/s. the molten metal overflows from the pouring cup and flows into the downsprue. the cross section of the sprue is round, with a diameter at the top = 3.4 cm. if the sprue is 20 cm long, determine the proper diameter at its base so as to maintain the same volume flow rate.
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Ответ:
dt = 0.072s so F = 0.66/0.072 = 9.2N