558_Dynamics 11ed Manual

558_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

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Engineering Mechanics - Dynamics Chapter 17 Problem 17-71 The variable-resistance motor is often used for appliances, pumps, and blowers. By applying a current through the stator S , an electromagnetic field is created that “pulls in” the nearest rotor poles. The result of this is to create a torque M about the bearing at A . If the rotor is made from iron and has a cylindrical core of mass M 1 , diameter d and eight extended slender rods, each having a mass M 2 and length l , determine its angular velocity at time t starting from rest. Given: M 1 3kg = l 100mm = M 2 1kg = d 50 mm = M 4Nm = t 5s = Solution: I A 1 2 M 1 d 2
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This note was uploaded on 08/16/2011 for the course EGN 3321 taught by Professor Christianfeldt during the Spring '08 term at University of Central Florida.

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