What is the formula of controlling force (Fc) of a governor?
a) Fc = n2 ω r
b) Fc = m ω r
c) Fc = m ω2 r
d) Fc = m ω r2
Answer: c
Explanation: In case of governor running at a steady speed, the inward force acting on the rotating balls is known as controlling force. It is equal and opposite to the centrifugal reaction. The formula of controlling force (Fc) of a governor is Fc= m ω2 r.
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