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What is the correct answer?
4
In a Hartnell governor, the stiffness of the spring is given by (where S1 and S2 = Spring forces exerted on the sleeve at max. and min. radii of rotation, and h = Compression of the spring)
A.
(S₁ + S₂)/h
B.
(S₁ - S₂)/h
C.
(S₁ + S₂)/2h
D.
(S₁ - S₂)/2h
Correct Answer :
B. (S₁ - S₂)/h
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