Lecture_6_(Student_Handout)

Lecture_6_(Student_Handout) - PHYS 172: Modern Mechanics...

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Summer 2009 PHYS 172: Modern Mechanics Lecture 6 – Gravity, Complex Systems Read 3.6 – 3.11 Exams July 1 Phys 112 7 - 9 PM July 15 FRNY 140 7 – 9 PM July 29 FRNY 140 7 – 9 PM August 6 Phys 112 8-10 AM
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READING QUIZ #1 WHY SPRINGS? Atomic bonds can be modeled as tiny springs between atoms The spring-forces results from the electric-interactions of huge numbers of atoms.
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Iteratively Updating Motion Today: Gravity The Gravitational Force Law Complex Systems and Chaos Non-Constant Forces sys net p Ft Δ=Δ G G What do you use for ? You must: net F G 1. Use the value of the net force over the interval OR 2. Pick a that the force is mostly constant over interval
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Iterative Prediction of Motion First divide the total time interval into many smaller time intervals (so that F is roughly constant over the interval). Then • Calculate the (vector) forces acting on the system • Update system momentum: • Update position: • Repeat You’ll do this many times in lab this semester.
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This note was uploaded on 09/14/2009 for the course ENGR 126 taught by Professor Oakes during the Fall '08 term at Purdue University.

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Lecture_6_(Student_Handout) - PHYS 172: Modern Mechanics...

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