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A grinding wheel is in the form of uniform solid disk of radius 7.00 cm and...

A grinding wheel is in the form of uniform solid disk of radius 7.00 cm and mass 2.00 kg (I=1/2(mr^2)). It starts from rest and rotates with constant angular acceleration of 12.0 rad/sec^2.

A) How long does the wheel take to reach its final operating speed of 1200 rev/min?

B) Through how many revolutions does it turn while accelerating?

C) calculate the rotational kinetic energy of the wheel at its operating speed.

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