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After this lesson, you should be able to:

  • Identify common forces acting on an object
  • Define normal force as a contact force exerted by the surface an object is in contact with
  • Define and distinguish between static and kinetic friction
  • Use the relationship between friction and normal force to calculate friction
  • Understand that frictional, normal and tensional forces arise from the interactions of materials at the molecular level and are electromagnetic in nature