Phy 2048c general physics i with lab spring 2011 crns 11154 11161 11165
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PHY 2048C General Physics I with lab Spring 2011 CRNs 11154, 11161 & 11165 PowerPoint PPT Presentation


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PHY 2048C General Physics I with lab Spring 2011 CRNs 11154, 11161 & 11165. Dr. Derrick Boucher Assoc. Prof. of Physics. Session 3-4, Chapter 4. Chapter 4. Simple Projectile Motion Circular motion Centripetal Acceleration in Uniform Circular Motion Rotational/Translational comparisons.

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PHY 2048C General Physics I with lab Spring 2011 CRNs 11154, 11161 & 11165

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Phy 2048c general physics i with lab spring 2011 crns 11154 11161 11165

PHY 2048CGeneral Physics I with labSpring 2011CRNs 11154, 11161 & 11165

Dr. Derrick Boucher

Assoc. Prof. of Physics

Session 3-4, Chapter 4


Phy 2048c general physics i with lab spring 2011 crns 11154 11161 11165

Chapter 4

  • Simple Projectile Motion

  • Circular motion

  • Centripetal Acceleration in Uniform Circular Motion

  • Rotational/Translational comparisons


Phy 2048c general physics i with lab spring 2011 crns 11154 11161 11165

Chapter 4 Practice Problems

Chap 4: 7, 37, 47, 49, 61, 65

Unless otherwise indicated, all practice material is from the “Exercises and Problems” section at the end of the chapter. (Not “Questions.”)


Phy 2048c general physics i with lab spring 2011 crns 11154 11161 11165

2-D Kinematics

  • The x and y components of the motion are treated separately.

  • Do not mix up x and y data when setting up and solving equations.

  • Good strategy: separate paper into “X” and “Y” columns.

  • Certain events can connect x and y motion at particular moments (certain t values).


Phy 2048c general physics i with lab spring 2011 crns 11154 11161 11165

2-D Kinematics Equations

General 2-D motion

“Projectile” motion

ay = -g, ax = 0


Phy 2048c general physics i with lab spring 2011 crns 11154 11161 11165

Example problem

Chapter 4 #10 (p. 120)


Phy 2048c general physics i with lab spring 2011 crns 11154 11161 11165

Circular Motion

  • Radius is constant (or unimportant)

  • “Position” is an angle, in radians, θ

  • Velocity is radians per second, ω (that’s “omega”, not “curly double-u.”)

  • Acceleration can be along the tangent to the circle, at , or in a radial or “centripetal” direction, ac .


Phy 2048c general physics i with lab spring 2011 crns 11154 11161 11165

s

θ


Phy 2048c general physics i with lab spring 2011 crns 11154 11161 11165

Example problem

Chapter 4 #38 (p. 122)


Phy 2048c general physics i with lab spring 2011 crns 11154 11161 11165

Centripetal Acceleration


Phy 2048c general physics i with lab spring 2011 crns 11154 11161 11165

Example problem

Chapter 4 #62 (p. 123)


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