6. What is a simple machine that can split objects apart when you appl
force?
A. lever
B. pulley
C. screw
D. wedge
7. How do a wheelbarrow, a can opener, and a nutcracker help us to do
work?
A. They hold things together.
B. They lift an object with less force.
C. They increase the amount of force.
D. They change the direction of the force.
8. Where will you move the fulcrum if you want to decrease the effort for
when using a lever?
A. Only the effort force must be move.
B. The fulcrum should be closer to the object.
C. Anywhere, it does not affect the effort force.
D. The fulcrum should be farther away from the object.​