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Writer's picturekeshprad

PhysicsBowl 2016 Q16


16) Question 16 tells us of a situation where a stick rotates around an axis with a constant angular acceleration. Our goal is to find the angular speed of the stick after completing a full rotation.

Where t is time, and θ is angle

Using this information, we can solve a kinematic equation to find the angular acceleration.

Where θ is angular displacement, t is time, ω is angular speed and α is angular acceleration

Remember that the angular acceleration is constant, so now, when the rod has rotated a full rotation, we can solve for the final angular speed using the calculated angular acceleration.


One full rotation is an angular displacement of 2π.

Where θ is angular displacement, ω is angular speed and α is angular acceleration

Answer: C

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