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Daily Problem

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If you have a mass of 25 kg, what is the normal force?

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A 5.0 kg box is on a table. The static friction coefficient between the box and the table is 0.50, and the kinetic coefficient of friction is 0.30. What is the frictional force when the box is at rest?

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A 3 N box is on a table. The static friction coefficient between the box and the table is 0.50, and the kinetic coefficient of friction is 0.30. What is the frictional force when the box is moving at a constant velocity?

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Friction Lab - Make a Prediction

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Which one of the surfaces will have the highest coefficient of friction in the lab today?

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What we are doing today:

  1. Daily Problem
  2. Language/Learning Targets
  3. Review Practice Problems
  4. Lab: Friction
  5. Extra Time? Exit ticket for chapter 5, lesson 4 due Monday, 11/21 by 3:00 P.M.
  6. Questions?

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  • PK 5.2 - I understand the difference between kinetic and static friction and understand how the coefficient of friction relates to friction.
  • M 5.5 - I can use the five steps to solve for an unknown variable with the equations given in this chapter and previous chapters.
  • M 5.6 - I know the abbreviations/units for all the previously learned terms and the coefficient of friction.

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  • Students will read and watch the content lessons on the class website.
  • Students will listen to the discussion, directions, and group members.
  • Students will write down notes throughout the discussion.
  • Students will discuss the concepts and answers to questions with their small groups.

Language Objectives

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Friction

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Get out your 5.3 Practice Problems. We will be going over that after attendance

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Review - Chapter 5, Lesson 3 Practice Problems

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Lab: Friction

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Work on Chapter 5, Lesson 4 Exit Ticket

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Due: Monday, November 21st before 3:00 P.M.

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Any Questions?

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