physics 202 lecture notes - pccspot.pcc.edu/~dulrich/2013p202/2013p202ln02.pdf · the three phases...
TRANSCRIPT
The three phases of matter are characterized by how they respond toexternal force
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As solids deform, they “push back” — this elasticity is often shown withsprings
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An ideal spring is the simplest elastic system and is defined by Hooke’sLaw
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Energy in an ideal spring is parabolic; the amplitude is tied to the totalenergy
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The forces need not be perfectly linear to apply these concepts: e.g., thependulum
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The deformation that results from small stress is linear (Hooke’s law again)
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Stress is from multiple forces on an object — can be classified as threebasic types
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