2012_1061_Lecture_Ch_09

Dp f dt we can derive the usual form of newtons second

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Unformatted text preview: ge of momentum of an object is equal to the net force applied to it. − → − → dp ΣF = dt We can derive the usual form of Newton’s second law → → → − → d− p d(m− ) v d− v → ΣF = = =m = m− a dt dt dt Here we have by definition and the mass m is constant → d− −= v → a dt [constant mass] Conservation of Momentum Momentum before = Momentum after − +m − =m −￿ +m −￿ → → → mA →A v vB vA B A BvB − → [Σ F ext = 0] Conservation of momentum (2) → − → d− B p F= dt → − → d− A p −F= dt Adding these to equa.ons is consistent with evalua.ng the net force. This leads to: − +− ) → → d(...
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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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