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Article: Basic physics for homesteaders.(laws of conservation and gravity are key)
- Article from:
- Countryside & Small Stock Journal
- Article date:
- March 1, 1999
CopyrightCOPYRIGHT 1999 Countryside Publications Ltd. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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If you didn't pay attention in school, here's another chance
(The quiz will come the next time you have to move something heavy)
Human beings can lift, push, pull or carry only a limited amount of weight. This limits the amount of useful work they can do --"work" being defined as an applied force moving through some distance.
But humans can think. This allowed them to develop simple machines, well before the dawn of recorded history.
Most modern machines, and "machinery" as we usually think of it, are extremely complex. But all are based on certain mechanical principles demonstrated in the simple machines of antiquity.
The ...