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Originally Posted by Ninja_Bait
1. Centripetal acceleration is constant
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The
magnitude of the centripetal acceleration is constant, but the centripetal acceleration vector is not constant because its direction is changing.
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Centripetal force on the wheel = (WL/g)(omega_p)^2 = Tension in the rod
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The tension on the rod is not the only force acting on the wheel+motor assembly, so you can't set it equal to (WL/g)(omega_p)^2
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Tangential acceleration is zero
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Angular acceleration is zero.
Tangential acceleration is the rate at which the tangential velocity is changing. Since the tangential velocity is not constant, the tangential acceleration is not zero.