Lecture 03

# Lecture 03 - ME 221 Statics Lecture#3 Sections 2.6 2.8 ME...

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ME 221 Lecture 3 1 ME 221 Statics Lecture #3 Sections 2.6 – 2.8

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ME 221 Lecture 3 2 Announcements HW #1 Due Today Quiz #1 - 15 minutes before the end of the lecture HW #2 due Friday 5/28 Ch 2: 23, 29, 32, 37, 47, 50, 61, 82, 105, 113 Ch 3: 1, 8, 11, 25, 35 Quiz #2 on Monday, May 24 Exam # 1 will be on Wednesday, June 2
ME 221 Lecture 3 3 Summary of Last Lecture Writing vector components in terms of base vectors Generating a 3-D unit vector from any given vector

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ME 221 Lecture 3 4 Nonorthogonal Bases; Linear Equations Resolving vectors onto nonorthogonal directions Setting up and solving linear systems of algebraic equations Resolving Vectors into Components Using Angle Notation
ME 221 Lecture 3 5 x y z O A α β A=A sin α sin β i+A cos j+A sin cos k Resolving vector into components using angle notation A y A A

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ME 221 Lecture 3 6 Vector Components in Nonorthogonal Coordinate System - β x y v u v x u y A A A ) sin( ) sin( ) 90 sin( α θ β - = - = + + ) 90 sin( ) sin( + + - = y u A A ) 90 sin( ) sin( + + - = x v A A A: Using Trig (law of sines): A x A y
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Lecture 03 - ME 221 Statics Lecture#3 Sections 2.6 2.8 ME...

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