Theory of Machine
The equation of motion for a single degree of freedom system with viscous damping is 4(dx²/dt²) + 9(dx/dt) + 16x. The damping ratio of the system is

44090
30195
9/128
44082

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Theory of Machine
The maximum fluctuation of speed is the

Sum of maximum and minimum speeds
Variations of speed above and below the mean resisting torque line
Difference of the maximum and minimum speeds
Difference of minimum fluctuation of speed and the mean speed

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Theory of Machine
Crowning on pulleys helps

In decreasing the slip of the belt
In increasing velocity ratio
Increase belt and pulley life
For automatic adjustment of belt position so that belt runs centrally

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