What is the name for a rigid bar that can pivot on a point of support?
Lever
What is the name we use for the point of support?
Fulcrum
What is the name for the applied force?
Effort
What is the name for the load to be lifted or the resistance that must be overcome?
Resistance
What is the name for the law which describes the forces of a lever in equilibrium (balance)?
The law of the lever
How would you describe the law of the lever?
(The result of the applied effort x the distance from the fulcrum) must be equal to (the result of the resistance x the distance from the fulcrum)
True or False: the greater the distance between the applied force and the fulcrum, the less effort that is required?
True
What are some examples of a Class 1 Lever?
See-saw, pliers, scissors, oar, crowbar
What are some examples of a Class 2 Lever?
Nutcracker, wheelbarrow, paper punch,
What are some examples of a Class 3 Lever?
Tweezers, kitchen tongs, staple removers, broom, etc
