05-Partial_Momentum

05-Partial_Momentum - Impulse & Momentum 1 F =...

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Unformatted text preview: Impulse & Momentum 1 F = m a t F v i m F v f m F = m v/ t F = m (v f v i )/ t F t = m (v f v i ) F t = mv f mv i Im p u lse F i n a l M o m e n t u m In itia l M o m en tu m Impulse & Momentum 2 t F v i m F v f m F t = mv f mv i F t = mv f mv i F t = mv f mv i F t = F t A force of 1N acting for 100 s will cause the same change in momentum as a force of 100 N acting for 1 s. Sample Problem 1 F t = m v v i m t v f m F F t = m (v f v i ) v i = 50.0 m/s t = .0110 s v f = -v i F = ? N F = [ m (v f v i )]/ t m = .0400 kg F = [ .04 (-50 - 50)]/.011 F = -364 N F 2245-90 lb Sample Problem 2 F t = m v v i m t F F t = m (v f v i ) v i = 50.0 m/s t = .0110 s v f = 0 F = ? N F = [ m (v f v i )]/ t m = .0400 kg F = [ .04 (0 - 50)]/.011 F = -182 N F 2245-45 lb Variable Impact Force F t F max F av t 1 t 2 Ft = mv Fdt = mv Fdt = Area under the graph of F vs t...
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This note was uploaded on 02/21/2009 for the course PHY 3425345 taught by Professor Dr.schrieber during the Spring '08 term at TCNJ.

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05-Partial_Momentum - Impulse & Momentum 1 F =...

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