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For a Hartnell governor which of the following relation regarding r₁/r₂ is true for isochronisms?

For a Hartnell governor which of the following relation regarding r₁/r₂ is true for isochronisms? Correct Answer (M.g + S1) ÷ (M.g + S2)

For isochronisms the equilibrium speed should remain constant throughout, i.e Range should be 0. Applying that condition we have r1/r2 = (M.g + S1) ÷ (M.g + S2)

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