The elapsed time is 3.5 s. Initial angular velocity Wo. +5.0 rad/s final angular velocity W.+2.0 rad/s
To find the average angular acceleration, we can use the formula:
Average angular acceleration (α) = (final angular velocity - initial angular velocity) / elapsed time
Plugging in the values given:
α = (2.0 rad/s - 5.0 rad/s) / 3.5 s
α = -3.0 rad/s / 3.5 s
α ≈ -0.857 rad/s²
Therefore, the average angular acceleration is approximately -0.857 rad/s².