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A 10-cm diameter cylindrical shaft rotates inside a 40-cm
Chapter 2, Problem 115P(choose chapter or problem)
Problem 115P
A 10-cm diameter cylindrical shaft rotates inside a 40-cm long 10.3-cm diameter bearing. The space between the shaft and the bearing is completely filed with oil whose viscosity at anticipated operating temperature is 0.300 N-s/m2. Determine the power required to overcome friction when the shaft rotates at a speed of (a) 600 rpm and (b) 1200 rpm.
Questions & Answers
QUESTION:
Problem 115P
A 10-cm diameter cylindrical shaft rotates inside a 40-cm long 10.3-cm diameter bearing. The space between the shaft and the bearing is completely filed with oil whose viscosity at anticipated operating temperature is 0.300 N-s/m2. Determine the power required to overcome friction when the shaft rotates at a speed of (a) 600 rpm and (b) 1200 rpm.
ANSWER:
Problem 115P
Solution 115 P
Step 1:
In this question, we need to find power required at different speeds
Data given
Diameter
Radius
Length
Viscosity
Speed
Speed
Length between bearing and shaft