Question: how sure how to work out this problem 3. A disk spins with an angular acceleration -0.5t rad/s2. At instant t = 0 s, its

how sure how to work out this problem

3. A disk spins with an angular acceleration -0.5t rad/s2. At instant t = 0 s, its angular velocity is 12 rad/s. What is its angular displacement (in rad) from 0 s to 20 s? (7 pts)

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