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A grinding wheel of radius 20.0 cm is initially spinning with an angular speed of 2.0...

A grinding wheel of radius 20.0 cm is initially spinning with an angular speed of 2.0 rad/s. When the power of the grinder is increased the angular speed increased to 10 rad/s over the next 5.0 s.

a. Calculate the avg. angular speed of the grindstone during the 5 seconds.

b. Calculate the angular acceleration of the grinding wheel during the 5 seconds.

c. How many revolutions does the grindstone turn during the 5 seconds?

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