Question: The L-shaped arm BCD rotates about the z axis with a constant angular velocity 1 of 5rad/s, knowing that the 7.5-in.-radius disk rotates about BC

The L-shaped arm BCD rotates about the z axis with a constant angular velocity ω1 of 5rad/s, knowing that the 7.5-in.-radius disk rotates about BC with a constant angular velocity ω2 of 4 rad/s, determine the angular acceleration of the disk.

7.5 in.

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