A flat, circular hydrostatic air bearing has an outer diameter of 160 mm and a 5-mm-deep recess from the 50-mm diameter to the b
earing center. The air pressure in the recess is 2 MPa, and the pressure around the outside of the bearing is 0.1 MPa.
1. Determine the pressure distribution in the bearing if 0.3 kg of air is pumped through the bearing per second. The air density is 1 kg/m^3 at atmospheric pressure and the air viscosity is 18.2 x 10^-6 Pa-s at 22°C.
2. Also, calculate the air film thickness and the friction torque if the bearing rotates at 8000 rpm.
1. Determine the pressure distribution in the bearing if 0.3 kg of air is pumped through the bearing per second. The air density is 1 kg/m^3 at atmospheric pressure and the air viscosity is 18.2 x 10^-6 Pa-s at 22°C.
2. Also, calculate the air film thickness and the friction torque if the bearing rotates at 8000 rpm.
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Explanation:
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Correct answer is option E. No dimensions
As we know formula Pressure (P) is
also,
- Dimensional formula of <em>Pressure is </em>
- Dimensional formula of <em>length is L </em>
- Dimensional formula of <em>mass is M</em>
- Dimensional formula of <em>velocity is </em>
So, as given W=
Dimensional formula of W =
since all terms get cancelled
Work is dimensionless i.e no dimensions
Learn more about dimensions here brainly.com/question/20351712
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