Question: Tooth numbers for the gear train shown in the figure are N2 = 12, N3 = 16, and N4 = 12. How many teeth must

Tooth numbers for the gear train shown in the figure are N2 = 12, N3 = 16, and N4 = 12. How many teeth must internal gear 5 have? Suppose gear 5 is fixed.

What is the speed of the arm if shaft a rotates counterclockwise at 320rev/min?

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