Is a bar that turns against an unmoving point.
A lever can be an advantage if you want to move something from one floor to another and it has a fun side to a lever can be a seesaw everyone likes a seesaw
A brake lever
one major lever on your bike is the brake without it how will you stop
Scissors as a lever
A scissors can be a lever it has a fulcrum and evreything
It can help
In the picture the lever is helping the man move the big heavy rock