A torque of 12 Nm is applied to a disk of radius 0.50m. If the disk accelerates at 5.7 rad/s^2 what is the mass of the disk?
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Expert's answer
2012-07-05T11:21:53-0400
Torque = moment of inertia x angular acceleration Moment of inertia = 0.5 * m * r * 2 T = 0.5 * m * r * 2 * a 12 = 0.5 * m * 0.50 * 2 * 5.7 m = 12 / (0.5 * 0.50 * 2 * 5.7) = 4.21 kg
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