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)

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1.	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.	<img src="/_files/images/mechanical-engineering/theory-of-machines/502-342-1.png">
B.	<img src="/_files/images/mechanical-engineering/theory-of-machines/502-342-2.png">
C.	<img src="/_files/images/mechanical-engineering/theory-of-machines/502-342-3.png">
D.	<img src="/_files/images/mechanical-engineering/theory-of-machines/502-342-4.png">
Answer» C. <img src="/_files/images/mechanical-engineering/theory-of-machines/502-342-3.png">

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)

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