Answer:
There are three types or classes of levers, according to where the load and effort are located with respect to the fulcrum. Since humans usually provide energy to levers, "effort" and "load" are often used instead of input and output.
Class 1 has the fulcrum placed between the effort and load. Class 2 has the load between the effort and the fulcrum. Class 3 has the effort between the load and the fulcrum.
Each has its own uses and advantages.
Questions you may have include:
What is a class 1 lever?
What is a class 2 lever?
What is a class 3 lever?
This lesson will answer those questions. Useful tool: Units Conversion
Class 1 lever
A Class 1 lever has the fulcrum placed between the effort and load. The movement of the load is in the opposite direction of the movement of the effort. This is the most common lever configuration.
Explanation:
Answer:
First class refers to motive and resistive force on either side of the fulcrum which is in the center. When fleeing muscles there is groups of muscles that act as a force of resistance. It works as a mean of rotation. Second class is resistance between the axis of applied force. These levers result in smoother motion and less inertia. Third class levers are a force between an axis and resistance. They act as a means for higher inertia which is more difficult to stop.
I had the question and got 100 on edge.
