*********** REPLY SEPARATOR *********** On 9/14/00 at 9:02 AM Richard Moody wrote: -- snip -- > >I beg your pardon, I wrote faster than I remembered middle school physics. >A lever can have the fulcrum on the end instead of in the middle, making it >a class one, two or three, I can't remember. -- snip -- Richard: A first class lever has the fulcrum between the load and the force. A second class has the load between the fulcrum and force (like a wheel barrow). A third class lever has the force between the fulcrum and the load (like a grand hammer shank.) A second class lever always optimizes force, a third class optimizes speed. A first class lever can optimize either depending on the length of the arms. dave David M. Porritt dporritt@swbell.net Meadows School of the Arts Southern Methodist University Dallas, TX 75275
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