Describe each class of lever and explain the characteristics of each

There are three classes of Lever:

1) First Class of Lever: In this, Fulcrum is always changes the direction of the input force and can be used to increase the force or the distance

2) Second Class of Lever: In this, Fulcrum does not change direction of the input force & Output force is greater than the input force.

3) Third Class of Lever: In this, the input force is between the fulcrum and the load does not change the direction of the input force. Here, Output force is less than input force.

Explanation:

Hope this helps!

you would have a std. i hope this .