Page 5 - SIMPLE MACHINES

Example: wheelbarrow. The axle of the wheel acts as the fulcrum, the handles are the

force arm, and the load is carried between the two in the bucket part of the wheel
barrow.

Wheelbarrow

Other second class levers include:

A pair of nutcrackers A bottle opener

 A third-class lever: The lever has the effort in the middle, between the load and the
fulcrum. This arrangement requires large force is to move the load. But this arrangement
facilitates movement of the load over a long distance with a relatively small movement

of the force arm.