The angular speed of an automobile engine is increased at a constant rate from 1,200 rev/min to 3000 rev/min in 9 s.  What is its angular acceleration in revolutions per minute squared?  Enter units as r/m/m.  Don't forget to convert between seconds and minutes.

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Q: what's the conversion factor from radians per second?

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A: Using equation of motion for angular variables, we can get the desired answers.

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A: Solution

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Q: A computer hard disk starts from rest, then speeds up with an angular acceleration of 190 rad/s2…

A: We have to use some basic formula here

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Q: A child pushes a merry-go-round from rest to a final angular speed of 0.760 rev/s with constant…

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A: Solution as

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