In the circus, several acts involve levers.
Two basic components make up a lever, the board and the fulcrum. A lever allows for a force transfer from one area on the board to another. In the circus, levers are used transfer forces from one performer to another.
Levers are one way to transfer force. The position of the fulcrum allows the transfer of force to make it seem easier to move an object. In addition, it flips the direction of the force. This means that pushing down would cause an object on the other
In the teeter board act performers use a lever to flip other performers off the end of the board. The performers make use of gravity by jumping off a platform so they hit the lever with more velocity. This launches the performer(s) on the other end up
Your students should know about the following topics before doing these lessons:
Brought to you by Mr. Leaf's 9th Grade Technology
and Engineering Concepts (TEC) Class
| T.J. Purtell | Lara Crigger |
| Phillip Kirlin | Anthony Coppola |
| Sean White | Robert Gray |
Contact Jeffery Leaf
at jleaf@lan.tjhsst.edu
Thomas Jefferson High School for Science
and Technology