lecture28 - Announcements December 1, 2009 1. If you have...

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1 Announcements December 1, 2009 1. If you have arranged to take the comprehensive make-up on Dec. 9, send an email by Dec. 3 to “ ilovephysics ” with the subject line “ make-up exam ” and list your excuse in the body. 2. Last homework will be posted tomorrow—Due Tuesday (Dec. 8) at 11:59 pm. 3. Next Tuesday class will be review and evaluation of me. There will be no clicker points next Tuesday for the review. Chapter 13.1-13.3 Simple Harmonic Oscillators (SHOs) The whole universe is composed of SHOs What are they? A system with energy sloshing between kinetic and potential A system that can stretch and go back to original shape A system with linear restoring force to original shape Hooke’s Law gives the force F = - k x Hooke’s Law Applied to a Spring – Mass System • When x is positive (to the right), F is negative (to the left) • When x = 0 (at equilibrium), F is 0 • When x is negative (to the left), F is positive (to the right) Think about the position x , speed v , and acceleration a
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lecture28 - Announcements December 1, 2009 1. If you have...

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