Physcis 2

Physcis 2
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  • Well, there are two types of potential energy: Elastic and Gravitational. For gravitational, you do mass times height times acceleration. For elastic, you are given a spring constant which is shown by the letter "K". For that you do 1/2 by K by velcty squared.   
  • Okay so potential and kinetic energy got it. Well how do I find potential energy?
  • Well sort of, but we do use the conservation of mechanical energy to show this. That means that Ke+PEe+PEg=KE+PEe+Peg. This is helpful when finding a component that might be missing and just to show how potential and kinetic energy are related.
  • And also all energy is conserved right? 
  • Oh and also there's work and power. Work is force times distance so really mass times acceleration times distance. Work is also related to power which is work over time. So if a motor puts out 1000 Watts of power and does 10 Joules of work, it would take that motor 100 seconds to do that task. Does that all make sense? 
  • Yes!
  • Not at all...
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