Posted by IBorange in TX on January 27, 2011 at 07:26:21 from (72.251.15.211):
In Reply to: OT home work posted by 55 50 Ron on January 26, 2011 at 22:37:02:
Man uses some simple machines to make work easier. There are 6 simple machines and levers being one of the six. Levers are divided into 3 different classes according to the location of the fulcrum in relation to the weight and effort force. Using levers, man is able to gain speed, change in direction, or effort. Of course, man is more interested in gaining effort. In other words, move more weight with less effort. In the first class lever, change in direction is gained,but also effort or speed can be gained depending on the location of the fulcrum. In fact, a simple pulley acts as a lever, gaining only change of direction. You pull down, the object goes up. In the second class lever,change of direction, nor speed can be gained,but only effort is gained again according to the location of the fulcrum. The third class the only thing gained is speed. I know,its clear as mud, but you asked. How do I know, taught Physics for 35yrs. God Bless,
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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