Question Detail
Question
A disc rotating at 6 rad/s accelerates at 2 rad/s² for 3 seconds. What is its final angular velocity?
Correct Answer
Option A is the correct answer.
Detailed Explanation
Using the equation ωf = ωi + αt, we have ωf = 6 rad/s + (2 rad/s² * 3 s) = 6 + 6 = 12 rad/s.
Hint
This is a straightforward application of the first rotational equation of motion.