Levers Flashcards
what is the load force?
load force is the force exerted by the load
what is the effort force?
effort force is the force required to move the load
how many types of levers are there, and what are they?
3, class 1, class 2, and class 3
What is a class 1 lever?
a class 1 lever can move a heavy load with a small force. in a class 1 lever, the fulcrum is between the load force and the effort force.
what is a class 2 lever
a class 2 lever always moves a large load using a small effort force, here the fulcrum is at one end. and the load is in the middle
what is a class 3 lever
class 3 levers always make things harder to lift or move instead of easier. in a class 3 lever the fulcrum is at one end and the effort force is in the middle
whats an example of a class 1 lever?
scissors
whats an example of a class 2 lever?
wheelbarrow
whats an example of a class 3 lever?
nutcracker or stapler