Angular Acceleration Problem - The Grindstone Problem

AI Thread Summary
To solve the grindstone problem involving angular acceleration, it's essential to recognize the parallels between translational and rotational motion equations. The grindstone starts from rest and completes 20.0 revolutions in 8.00 seconds, indicating a need to apply the appropriate angular kinematic equations. The confusion often arises from the variety of formulas available, but focusing on the relationship between angular displacement and angular acceleration simplifies the process. Understanding that both types of motion share similar principles can aid in determining the angular acceleration. Ultimately, applying the correct rotational formulas will yield the solution to the problem.
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A grindstone, initially at rest, is given a constant angular acceleration so that it makes 20.0 rev in the first 8.00 s. What is its angular acceleration?

I don't know which angular formula to use and how many are out there? I am so confused
 
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First off you might want to post in the homework help sub forum.

Second off, my tip is to realize the parallels between translational and rotational equations. They both simply deal with a position variable and it's rate of change, whether it be x or theta, the relations between the simple number and it's rate if change are the exact same.
 

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