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LEVERS

LEVERS. LEVERS. Fulcrum (axis) Resistance force Effort force Resistance arm = distance of acting force to the fulcrum Effort arm = distance from the effort to the fulcrum 3 types…. FIRST CLASS LEVER. Effort & resistance on opposite sides of the fulcrum. SECOND CLASS LEVER.

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LEVERS

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  1. LEVERS

  2. LEVERS • Fulcrum (axis) • Resistance force • Effort force • Resistance arm = distance of acting force to the fulcrum • Effort arm = distance from the effort to the fulcrum • 3 types…..

  3. FIRST CLASS LEVER • Effort & resistance on opposite sides of the fulcrum

  4. SECOND CLASS LEVER • Effort & resistance force on same side of the fulcrum.

  5. THIRD CLASS LEVER • Also have effort & resistance forces on same side as fulcrum but the effort arm is smaller than the resistance arm

  6. LEVER TASKS • http://www.youtube.com/watch?v=ny8k7LUUIEk • draw4 examples of each type of lever (at least one for each type of lever has to be in the human body). Label effort, resistance & fulcrum on each • Review p. 96 of text

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