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Up: Rotational motion
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Question: A tire placed on a balancing machine in a
service station starts from rest and turns through revolutions
in before reaching its final angular speed. What is the
angular acceleration of the tire (assuming that this quantity remains constant)?
What is the final angular speed of the tire?
Answer: The tire turns through
. The relationship between and for the case of rotational
motion, starting from
with uniform angular acceleration is
Given that the tire starts from rest, its angular velocity after seconds takes the form