2012_1061_Lecture_Ch_09

2012_1061_Lecture_Ch_09

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Unformatted text preview: p A p B 0= dt Which implies that → → − + − = constant = −￿ + −￿ → → pA pB pA pB Conservation of Momentum (3) •  For any number of interacting objects we can write their total momentum − → → → → → P = m1 − 1 + m2 − 2 + . . . + mn − n = Σ− i v v v p •  Then we differentiate with respect to time − → → − → dP d− i p =Σ = ΣFi dt dt •  In the sum all internal forces cancel by pairs and we have − → − → dP = Σ F ext dt Collisions and Impulse •  From Newton’s Second Law...
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This note was uploaded on 02/03/2014 for the course PHYSICS 1061 taught by Professor Tsankov during the Fall '09 term at Temple.

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