1004_chap15

# 1004_chap15 - ME240Dynamics Chapter15 EnergyMethods...

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Chapter 15. Energy Methods Particles ME 240 Dynamics

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Quiz 1 Review Monday Work and Kinetic Energy (15.1) HW: 15.9, 15.14 Supplemental Problems: 15.15 Agenda
ME 240 Quiz 1 Results (sections 2 and 3) 50 60 70 80 90 100 0 10 20 30 40 Scores Average: 82 ( 9) Distribution 92 100 12 88 92 15 83 88 28 78 83 26 70 78 23 60 70 7 <60 2 Notes 15% final grade Questions / Concerns Please contact me

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Principle of Work and Energy From Chapter 14 dv Fm dt    2 1 21 11 22 12 r r Fd r m v v m v v Um v m v Then after some manipulations and integrations, we end up with If we dot both sides by velocity v dv Fv m v dt Principle of Work and Energy: The (external) work done on an object as it moves between two positions equals the change in its kinetic energy
Evaluating the Work      1 1 12 ˆ tt s t s Fd r Fe d s F d s thus UF d s

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## This note was uploaded on 02/07/2011 for the course ME 240 taught by Professor Zinn during the Spring '07 term at University of Wisconsin.

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1004_chap15 - ME240Dynamics Chapter15 EnergyMethods...

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