15 - Potential Energy

15 - Potential Energy - Systems For next time Read Chapter...

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Systems For next time: Read: Chapter 8.3-8.6 Homework: Chapter 8: 32, 36, 66
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Review: A new bucket. .. KE + PE g + PE s = E 2 Kinetic Energy 1 2 KE mv =
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Review: A new bucket. .. KE + PE g + PE s = E Gravitational Potential Energy g PE mgh = h
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Review: A new bucket. .. KE + PE g + PE s = E 2 Spring Potential Energy 1 2 S PE k x = Spring potential energy is stored when spring is compressed or stretched by an amount x
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Let’s take the block as our entire system KE + PE g + PE s =E
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Compress the block KE + PE g + PE s =E
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Release the block KE + PE g + PE s =E
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KE + PE g + PE s =E
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KE + PE g + PE s =E
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KE + PE g + PE s =E
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KE + PE g + PE s =E
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KE + PE g + PE s =E
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KE + PE g + PE s =E
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KE + PE g + PE s =E
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KE + PE g + PE s =E
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Let’s include the spring in our system KE + PE g + PE s =E
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Let’s include the spring in our system KE + PE g + PE s =E
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Release the block KE + PE g + PE s =E
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KE + PE g + PE s =E
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KE + PE g + PE s =E
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KE + PE g + PE s =E
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KE + PE g + PE s =E
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KE + PE g + PE s =E
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KE + PE g + PE s =E
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KE + PE g + PE s =E
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KE + PE g + PE s =E
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The work-energy theorem: initial external final EW o r k E +=
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What should we include in our system? System ± Anything with mass that moves ( KE ) ± Earth ( PE g ) ± Springs ( PE s ) External Agents:
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What should we include in our system?
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This note was uploaded on 04/13/2008 for the course PHYS 211 taught by Professor Shannon during the Spring '08 term at MSU Bozeman.

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15 - Potential Energy - Systems For next time Read Chapter...

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