Chapter_8 - Ch 8 Potential Energy and Conservative Forces...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Ch 8: Potential Energy and Conservative Forces Focus: Mechanical energy E: two types, kinetic K and potential U Potential energy: stored energy in system, e.g., compressed spring, raised mass Potential energy U is the work that I do to configure the system. Example: Gravity– How much work do I do to raise a mass M , a distance y ? M g F ME = + M g W ME (y) = M g y U g (y) = M g y Gravitational Potential Energy Memorize this! y M 0 F ME
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Ch 8: Potential Energy and Conservative Forces Example: Spring– How much work do I do to compress or expand a spring a distance x? F ME = + k x F S = - k x F ME = + k x x 0 k x W ME (x) = Area under F ME vs x curve 2 2 1 ) ( x k x W ME = Memorize this! 2 2 1 ) ( x k x U spring = Potential Energy stored in a Spring M x 0 = equilibrium position F ME
Background image of page 2
Ch 8: Potential Energy and Conservative Forces Conservative and Nonconservative Forces 2 2 1 ) ( x k x U spring = If the work is path independent , the force is conservative, has potential U . Example:
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 5

Chapter_8 - Ch 8 Potential Energy and Conservative Forces...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online