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. $$\frac{{{{\text{S}}_1} + {{\text{S}}_2}}}{{\text{h}}}$$
B. $$\frac{{{{\text{S}}_1} - {{\text{S}}_2}}}{{\text{h}}}$$
C. $$\frac{{{{\text{S}}_1} + {{\text{S}}_2}}}{{{\text{2h}}}}$$
D. $$\frac{{{{\text{S}}_1} - {{\text{S}}_2}}}{{{\text{2h}}}}$$
Answer: Option B
This Question Belongs to Mechanical Engineering >> Theory Of Machine
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