Question

To what kind of lever the following machines belong: Door, humanarm, forceps, see-saw, pair of scissors, hand cart, balane handle of hand pump, upper and lower jaws of mouth.​

Answer 1

the answer of the question is class 1 lever

Answer 2

Answer:

door : 2 kind of lever

humanarm : 3 kind of lever

forceps : 3 kind of lever

see_saw : 1 kind of lever

pair of scissors : 1 kind of lever

balance : 1 kind of lever

handle of hand pump : 1 kind of lever