Question

State three differences between three classes of levers.

Answer 1

Class I	Class II	Class III
Fulcrum is between load and effort.​	Load is between fulcrum and effort.	Effort is between fulcrum and load.​
The effort arm can be shorter, equal to or longer than the load arm. ​	The effort arm is always longer than the load arm. ​	The effort arm is always shorter than the load arm.​
Mechanical advantage can be less than, equal to or greater than 1.​	Mechanical advantage is always greater than 1.​	Mechanical advantage is always less than 1.​