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Chapters 4 and 5 Forces and Friction

Chapters 4 and 5 Forces and Friction. What you should know by Monday for your test Teamwork! (Group problems). Review Sheet Part I:. How to fill in a free body diagram: What acts upwards? Downwards? Right, and left? When will the forces up and down be balanced?

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Chapters 4 and 5 Forces and Friction

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  1. Chapters 4 and 5Forces and Friction What you should know by Monday for your test Teamwork! (Group problems)

  2. Review Sheet Part I: • How to fill in a free body diagram: • What acts upwards? Downwards? Right, and left? • When will the forces up and down be balanced? • When will the forces left and right be balanced? • Four formulas for forces and friction • What’s the difference between mass and weight? • List all the labels for the different variables we use in these problems (Fnet, Fpush, Ffriction, Fnormal, Fweight, mass, mu, acceleration, gravity).

  3. What two things does friction depend on? • Can a force cause an object to come to rest? • Is the presence of a force or lack of a force the cause of an object coming to rest? • Is friction a contact force or a field force? • Isaac Newton’s 3 Laws, and applications of the laws. • What is inertia? • What is a newton? • What are the 2 ways to find the net force? • Create your own steps to solve force and friction problems. • What does a constant velocity indicate about a and Fnet?

  4. Example problem: You need to move a 105 kg sofa to a different location in the room. It takes a force of 102 N to start it moving horizontally (i.e. a=0m/s^2). What is the coefficient of friction between the sofa and the carpet?

  5. Packet handed out in class.

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