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Force.Ppt Force.Ppt Presentation Transcript

  • FORCE
  • What is Force?
    • A push or pull
    • Force has a size & direction
    • All motion is created by a force
    • All forces are exerted by one object on another
    • **Motion does not have to occur
  • How is Force Measured?
    • Measured in Newtons (N)
    • The more Newtons, the greater
    • the force
    • One tool to measure the force of
    • gravity is the spring scale
  • Examples of Force
    • Fingers open a book
    • Push buttons on a keyboard
    • Gravity holds up a chair
    • 2 magnets coming together
    • The force that results from combining forces
    Visible Forces Invisible Forces
  • How to Measure Net Force SAME DIRECTION = ADD TOGETHER 20N + 25N = 45N UNBALANCED FORCE because it produces MOTION This is the NET FORCE Person # 1 Pushing with 20N Force Person # 2 Pushing with 25N Force
  • How to Measure Net Force OPPOSITE DIRECTIONS = SUBTRACT 25N - 10N = 15N UNBALANCED FORCE because it produces MOTION This is the NET FORCE Team # 1 Pulling with 25N Force Team # 2 Pulling with 10N Force
  • How to Measure Net Force OPPOSITE DIRECTIONS = SUBTRACT 37N - 37N = 0N BALANCED FORCE because there is NO MOTION This is the NET FORCE Wrestler # 1 Pushing with 37N Force Wrestler # 2 Pushing with 37N Force