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Physics Stuff
Odds and Ends for the Classroom and Beyond
Some answers, useful resources and more questions.
Energy -Work <-Force->Impulse- Momentum
In the presentation and concept maps we relate the three approaches to Mechanics: Force-Energy-Momentum. With the latter in Einsteins theory being part of a more general object that is the source for the gravitational field.
ENERGY CAN BE WORK DONE AGAINST A FORCE FIELD:
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THE PRODUCT OF A FORCE FIELD RESISTING MOTION OVER A DISPLACEMENT.
THE (RESISTING) FORCE FIELD CAN EITHER BE:
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GRAVITATIONAL FIELD SO WORK BECOMES USEFUL POTENTIAL ENERGY.
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ELECTROSTATIC FIELD AS WORK DONE BECOMES USELESS THERMAL ENERGY OF FRICTION.
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