Problem 10.48
(II) A centrifuge rotor rotating at 10,300 rpm is shut off andis eventually brought uniformly to rest by a frictional torqueof 1.20 m N. If the mass of the rotor is 3.80 kg and it can beapproximated as a solid cylinder of radius 0.0710 m, throughhow many revolutions will the rotor turn before coming torest, and how long will it take?
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• Findpositionwithnoacceleration:x=x +vt 0 • Findvelocitywithconstantacceleration:v=v +at 0 2 • Findpositionwithacceleration:x=x +v t+0at 0 o x b0itself: x=x 0+v 0+½at 2 x 0=x–v t0–½at 2 o v b0itself: x=x0+v 0+½at 2 2 x–x0–½at =v t0 2 v 0=(x–x 0½at )/t o abyitself:
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Chapter 10, Problem 10.48 is Solved
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