A
(a)
The power required to overcome the friction when the shaft rotates at a speed of
Answer to Problem 123P
The power required to overcome the friction when the shaft rotates at a speed of
Explanation of Solution
Given information:
The diameter of cylindrical shaft is
Write the expression for the gap between shaft and the bearing.
Here, tthe gap between the shaft and the bearing is
Write the expression for the torque generated by the shaft.
Here, the torque is
Write the expression for the radius of the shaft.
Write the expression for the angular velocity.
Here, the angular velocity is
Write the expression for the power.
Here, the power is
Calculation:
Substitute
Substitute
Substitute
Substitute
Substitute
Conclusion:
The power required to overcome the friction when the shaft rotates at a speed of
(b)
The power required to overcome the friction when the shaft rotates at a speed of
Answer to Problem 123P
The power required to overcome the friction when the shaft rotates at a speed of
Explanation of Solution
Given information:
The speed of the shaft is
Calculation:
Substitute
Substitute
Substitute
Conclusion:
The power required to overcome the friction when the shaft rotates at a speed of
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Chapter 2 Solutions
FLUID MECHANICS FUND. (LL)-W/ACCESS
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