How do i make a mobile explaining the 3 levers for science?

Question

im making a mobile for science and i need to explain the 3 levers. i need help!! i do i make that?

Answer 1

get some heavy cardboard. cut three ovals about 6" x 12".

get some thin sticks or unbend a few wire coat hangers.

get some dental floss or string.

on one side of each oval, write "class1" "class2" and 'class 3'

on the other side, make a picture of that lever, with the load, force, and fulcrum labelled.

Now tie the ovals to the sticks so it makes a mobile.  See this picture for details.  Horizontal members are sticks or coathangers.  vertical members are dental floss or string.