Is a crane a class 1 lever or a class 2 lever or a class 3 lever?

It can be either.The little bolt that connects the two scissor blades is considered the fulcrum (axis of rotation).The distance between that fulcrum and the handle of the scissors where you're...

A lever is a rigid bar that is free to rotate, or pivot, on a fixed point. The fixed point on a lever is a fulcrum. Frist-Class LeversSecound-Class LeversThird-Class Levers

because they are smaller than the level 3 that's why

Neither. Scissors are a first class lever, because the fulcrum is between your effort and your resistance.

first class second class third class