1.

*$_In a flat collar pivot bearing, the moment due to friction is proportional to?

A. (r₁² - r₂²)/(r₁ - r₂)
B. (r₁² - r₂²)/(r₁ + r₂)
C. (r₁³ - r₂³)/(r₁² - r₂²)
D. (r₁³ - r₂³)/(r₁ - r₂)
Answer» D. (r‚Äö√á√Ö¬¨‚â• - r‚Äö√á√ᬨ‚â•)/(r‚Äö√á√Ö - r‚Äö√á√á)


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