What are 1st levers 2nd levers and 3rd levers?

Levers can be all of them. A first class lever is when the pivot (funcrum) is in the middle. A second class lever has the load (resistance) in the middle, and the third class lever has the effort...

The distinction among the classes of levers is determined by the physical sequence of the fulcrum, effort, and load.When they're arranged in exactly that sequence, you've got yourselfa 3rd Class...

A hammer is a 3rd class lever. A third class lever has a load-effort-fulcrum configuration. What is interesting about a hammer is that though the load is the head of the hammer, the effort and the...

First class lever: elbow (like a teeder-todder). Second class lever: jaw (like nutcrackers). Third class lever: knee (like a fishing pole or a broom).

needs to have a fixed point that it can rotate around