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March 20

March 20. Circular Motion and Gravitation Chapter 7. Agenda for March 20. Learning Target: Be able to solve problems involving Universal Law of gravitation. Vocabulary: Apparent weightlessness Semi-major axis ellipse Agenda Go over homework Section 4 simple Machines

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March 20

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  1. March 20 Circular Motion and Gravitation Chapter 7

  2. Agenda for March 20 • Learning Target: Be able to solve problems involving Universal Law of gravitation. • Vocabulary: • Apparent weightlessness • Semi-major axis • ellipse Agenda Go over homework Section 4 simple Machines Holt notes through end of Chapter Homework: Review for Group test on friday. Do the following problems from 263 through 266: 2, 5,7, 9, 13, 17, 18, 23, 27, 38, 47

  3. Quiz March 20-From notes • Why is it easier to loosen the lid of a paint can with a long-handled screw drive vs a short handled? • What does d sin  re[resent when looking at the equation for torque? • What is the efficiency ration of a machine when considering work. • Any devices that transmit or modifies force is called? • What are two types of simple machines used to move a bicycle forward? Provides a longer lever arm and a greater mechanical advantage The perpendicular distance from axis of rotation to direction of the force E=Wout/ Win Simple Machine Wheels and gear system (pulley)

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