Theory of Machine
A system in dynamic balance implies that

There will absolutely no wear of bearings
The system is also statically balanced
The system is critically damped
There is no critical speed in the system

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Theory of Machine
Sensitiveness of the governor is defined as the ratio of the

Sum of the maximum and minimum equilibrium speeds to the mean speed
Difference of the maximum and minimum equilibrium speeds to the mean speed
Mean speed to the maximum equilibrium speed
Mean speed to the minimum equilibrium speed

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