ME 242 Lecture 30 04.17

Me 242 lecture 30 0417

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Unformatted text preview: ME 242 Dynamics April 17, 2009 Today's Key Concepts Chapter 7: Kinetics of Rigid Bodies 2D Motion Example of 2D general motion Eric Wang Rigid Body General 2D Motion Kinematics Recall: Degrees of Freedom DOF = number of independent directions of motion possible v B = v A + rB /A a B = a A + r B / A + ( r B / A ) F = maG M G = IG b 3 Kinetics M A = IG b 3 + rG / A maG M A = IA b 3 + rG / A ma A 1-DOF How Many DOF's? How Many DOF's? 1 3 2 1 How Many DOF's? Example (prob. 7.3.11) Given: cart mass =...
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