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19.3 Conservation of Momentum Conservation of Angular Momentum Angular momentum is conserved about the G when the sum of all the angular impulses is zero. Copyright © 2010 Pearson Education South Asia Pte Ltd 19.3 Conservation of Momentum Procedure for Analysis Free-body Diagram Classify each of the applied forces as being - From FBD, the conservation of linear momentum applies when no external impulsive forces act on the body or system in that direction. The conservation of angular momentum applies at the mass center G when all external impulsive forces acting on the body or system create zero moment. Copyright © 2010 Pearson Education South Asia Pte Ltd
19.3 Conservation of Momentum Procedure for Analysis Conservation of Momentum Apply the conservation of linear or angular momentum in the appropriate directions. Kinematics If the motion appears to be complicated, kinematics (velocity) diagrams may be helpful in obtaining the necessary kinematics relations. Copyright © 2010 Pearson Education South Asia Pte Ltd Example 19.6 The 10 kg wheel has a moment of inertia I G = 0.156 kg.m2. Assuming that the wheel does not slip or rebound, determine the minimum velocity v G it must have to just roll over the obstruction at A. Copyright © 2010 Pearson Education South Asia Pte Ltd
Page 1 and 2: Engineering Mechanics: Dynamics in
Page 3 and 4: 19.1 Linear and Angular Momentum An
Page 5 and 6: 19.1 Linear and Angular Momentum Tr
Page 7 and 8: Example 19.1 At a given instant the
Page 9 and 10: 19.2 Principle of Impulse and Momen
Page 15 and 16: Example 19.2 Solution Principle of
Page 17: Example 19.4 Solution Cylinder Kine
Page 21 and 22: Example 19.6 Solution Conservation
Page 23 and 24: Example 19.8 The 5-kg slender rod i

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