Lecture 04 - ME 221 Statics Lecture #4 Sections 2.9 &...

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ME 221 Lecture 4 1 ME 221 Statics Lecture #4 Sections 2.9 & 2.10
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ME 221 Lecture 4 2 Announcements Quiz #2 - 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 #3 on Friday, May 28 Exam # 1 will be on Wednesday, June 2
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ME 221 Lecture 4 3 Vector Dot Product Section 2.8 Determining the angle between 2 vectors
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ME 221 Lecture 4 4 Dot Product Consider two vectors A and B with included angle θ A B By definition, the dot product is A B = | A | | B | cos
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ME 221 Lecture 4 5 Applications Determine the angle between two arbitrary vectors 1 cos θ - = A B A B g ·
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ME 221 Lecture 4 6
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ME 221 Lecture 4 7 Free-Body Diagrams; Equilibrium These two topics will tie Chapter 2 together. This material is the most important of the topics covered in class thus far.
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ME 221 Lecture 4 8 Particle Equilibrium For a particle to be in equilibrium, the resultant of the forces acting on it must sum
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Lecture 04 - ME 221 Statics Lecture #4 Sections 2.9 &...

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