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L7-WE-1_1 - Lesson 7 Kinetics Work-Energy#1 Fall 08 Student...

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Lesson 7 Kinetics: Work-Energy #1 Fall 08 Student Advice: “Don't use the solutions <manual> to the homework; Do the problems consistently throughout the week.”
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Admin Homework #3 Due Friday Online quiz tonight
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Review Kinematics – (e.g., ads=vdv) Newton’s second law, FBD and MAD Path (normal/tangential) Polar (radial/transverse)
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Lesson Objectives 1. Derive the work-energy equation from Newton’s second law. 1. Understand definitions of work and energy and how to calculate work. 2. Calculate the power generated by individual and sums of forces on a particle. 3. Apply work-energy relationships to solve dynamics problems.
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Soccer – Special Olympics
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How would you decide the type of spring that you would need?
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Kinematics Forces Work Kinetic Energy Momentum F a a m a = dt Impulse ds ds dt 2 1 t t dt F a 1 2 v m v m a a - 2 1 s s s d F a a a a 2 1 2 1 2 2 2 1 mv mv - = = Particle Dynamics Work- Energy Newton’s 2 nd Law Impulse- Momentum
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Work Energy Equation 2 2 1 1 T U T = + - 2 2 1 mv T = s d F U a a = - 2 1 ' 2 1 Work Kinetic Energy
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Questions about Example 7.2?
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