resultant forces

• Force


  A push or pull that acts on an object due to the interaction with another object
• Forces


  • Vector quantities (have both magnitude and direction)
• Resultant force


  A single force that has the same effect as all the original forces acting together
• Calculating resultant force


  Subtract the smaller force from the larger force
• Resultant force examples


  • Man pushing a box (20N right - 10N left = 10N right)
  • Car traveling (10,000N left - 9,000N right = 1,000N left)
  • Skydiver (800N down + 800N up = 0N)
• Free-body diagram


  • Shows the object as a point and the forces as arrows starting from that point
  • Arrow length represents force magnitude
  • Arrow direction represents force direction