Glycerin at 20 8 C fi lls the space between a hollow sleeve of diameter 12 cm and a fi
Chapter 1, Problem p1.40(choose chapter or problem)
Glycerin at 20 8 C fi lls the space between a hollow sleeve of diameter 12 cm and a fi xed coaxial solid rod of diameter 11.8 cm. The outer sleeve is rotated at 120 rev/min. Assuming no temperature change, estimate the torque required, in N m per meter of rod length, to hold the inner rod fi xed
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