Question

The drive propeller of a ship starts from rest and accelerates at 2.90 × 10−3 rad/s2...

The drive propeller of a ship starts from rest and accelerates at
2.90 × 10−3 rad/s2 for 2.10 × 103 s. For the next 1.40 × 103 s the propeller rotates at a constant
angular speed. Then it decelerates at 2.30 × 10−3 rad/s2 until it slows (without reversing direction)
to an angular speed of 4.00 rad/s. Find the total angular displacement of the propeller.

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