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1. |
Two pulleys of radii r‚ÇÅ and r‚ÇÇ and at distance x apart are connected by means of a cross belt drive. The length of the belt is$? |
A. | π (r₁ + r₂) + [(r₁ + r₂)²/x] + 2x |
B. | π (r₁ + r₂) + [(r₁ - r₂)²/x] + 2x |
C. | π (r₁ - r₂) + [(r₁ - r₂)²/x] + 2x |
D. | π (r₁ - r₂) + [(r₁ + r₂)²/x] + 2x |
Answer» B. ≈ì√Ñ (r‚Äö√á√Ö + r‚Äö√á√á) + [(r‚Äö√á√Ö - r‚Äö√á√á)¬¨‚â§/x] + 2x | |