7.6_EQ_SYS

# 7.6_EQ_SYS - ENGR 211 Lecture 7 Fall 2007 Civil Engineering...

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Unformatted text preview: ENGR 211 Lecture 7 Fall 2007 Civil Engineering Review Review Couples Couples Moments about a line Moments about a line New New Static Equilibrium Static Equilibrium Equivalent Systems Equivalent Systems ENGR 211 Lecture 7 Fall 2007 Civil Engineering Example Example – What is the total moment What is the total moment acting on the cube? acting on the cube? ENGR 211 Lecture 7 Fall 2007 Civil Engineering Force Couples: How to exert a Force Couples: How to exert a Moment without a net Force Moment without a net Force • Pair of Forces with – Equal Magnitudes – Opposite Directions – Different Lines of Action – Example: Screwdriver Civil Engineering Force Couples Force Couples ENGR 211 Lecture 7 Fall 2007 Civil Engineering Moment about a Line Moment about a Line • Capstan example • Mixed Triple Product M L = e L z ( r x F ) e L Civil Engineering M M L = [ = [ e e L z ( ( r r x x F F )] )] e e L e x e Y e z M L = r x r Y r z e L F x F Y F z ENGR 211 Lecture 7 Fall 2007 Civil Engineering Pillow Block Bearing Pillow Block Bearing Civil Engineering Bearing Connection Bearing Connection ENGR 211 Lecture 7...
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7.6_EQ_SYS - ENGR 211 Lecture 7 Fall 2007 Civil Engineering...

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