Class one levers
Elliot's page on levers Elliots intro to 3 classes of levers
elliots class 2 lever Elliot's class 3 levers

  • A class one lever has a fulcrum between the load and the effort arm in order to make a load easier to lift.
  • Their is some friction between the fulcrum and the plank.
  • The closer the fulcrum goes to the load or output force the easier the load is to lift.
  • The Ideal mechanical advantage is more than one when the effort arm is longer than the load arm.
  • The ideal mechanical advantage is equal to one when the fulcrum is directly in the middle.
  • The ideal mechanical advantage is less than one when the load arm is longer than the effort arm.
class_1_lever.jpg
CLASS ONE LEVER
















Examples of a class one lever
class one lever.jpg
Pliers
first class see saw.jpg
see-saw/ teetor totter


Elliot's page on levers
Elliots intro to 3 classes of levers
elliots class 2 lever Elliot's class 3 levers
Elliot's references

Feel smart? Take the levers quiz!Elliot's Levers quiz!!!