Physics, 23.08.2020 02:01 mmvill0809

A turntable is initially at rest. It starts rotating with a constant maximum angular acceleration for a period of 5 seconds. It then starts to slow down with an angular acceleration of - 1rad / (s ^ 2) for another 5 seconds. At the end of the 10 second period the turntable has undergone 20 rotations. What is the maximum angular acceleration the turntable reaches?

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