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Unformatted text preview: Chapters 20 Accounting for Linear Momentum Total Momentum is Conserved Total linear momentum (LM) is conserved. Total angular momentum (LM) is conserved. There is no generation or consumption of total linear or angular momentum. In Out = Acc Linear Momentum Linear momentum , Linear momentum and velocity are vector quantities (Cartesian, spherical, cylindrical). Need to resolve different directions Mass is a scalar quantity. velocity linear : v mass : m v m p = p Amounts and Rates The Conservation Eqn can be applied using amounts or rates of a material. Momentum [LMt1 ], units: kg . m/s, lb m . ft/hr Rate of momentum [MLt2 ], units: N, lb f Amt: Rate: acc out in = dt d acc out in = = p p Parts of LM Conservation Eqn LM can enter or leave a system with the flow of materials. LM can enter or leave a system as a result of external forces....
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 Fall '08
 ANNSATERBAK

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