15543. In a Hartnell governor, the lift of the sleeve is given by (where r1 and r2 = Max. and min. radii of rotation, x = Length of ball arm of the lever, and y = Length of sleeve arm of the lever) September 13, 2025 by Admin (r1 + r2) (r1 + r2) (r1 – r2) (r1 – r2) ✅ The correct answer is option C.