CU-Boulder PHYS 2010 - Exam 3 Review (2 pages)

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Exam 3 Review



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Exam 3 Review

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School:
University of Colorado at Boulder
Course:
Phys 2010 - General Physics 1
General Physics 1 Documents

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RIII 1 Phys2010 Exam 3 Review Chapters 1 through 7 12 see previous reviews Chapter 8 Momentum v v dp v v Dt Fnet Impulse Dp Fnet dt v Conservation of Momentum Fnet 0 v p constant v v v for system isolated from outside forces p tot m1v1 m 2 v 2 constant Collisions v p tot always conserved KE is conserved only in perfectly elastic collisions 2D collisions px tot and py tot are separately conserved Chapter 9 10 Rotations Analogy between rotation about a fixed axis and 1D translation along the x axis q rads s r w dq dt a dw dt like x v dx dt a dv dt vtan r atan r torque t r F moment of inertia I m r 2 i i i net I like Fnet m a KErotation 1 2 I 2 like KEtrans 1 2 m v2 Rolling motion KEtot KEtrans KErot 1 1 mv2 I w2 2 2 Angular Momentum v v v v v v v v t r F L r p for particle L I w for rotating object v dL v t net dt v v dp like Fnet dt v v dL v Conservation of Angular momentum If t net 0 0 L constant dt RIII 2 L constant Ii i If f Chapter 11 Static Equilibrium F x 0 F y 0 t 0 and The net torque about any axis must be zero Chapter 13 Simple Harmonic Motion Frestore x PE x2 period T independent of amplitude A sinusoidal motion Differential Equation Fnet m a k x Mass m on spring k w x t A cos wt j m a k x d2x k x 2 dt m 2p k T m v t A w sin wt j a t A w2 cos wt j Conservation of Energy 1 1 1 1 m v 2 k x 2 E tot E tot k A 2 m v 2max 2 2 2 2 Simple Pendulum SHM in limit of small amplitude w g L Remember to solve any before after problem in an isolated system try Conservation of energy or Conservation of momentum or Conservation of angular momentum To prepare for Exams Review Concept Tests and CAPA problems Read question and recall reasoning that gets to the answer Be able to solve CAPA algebraically Prepare your formula sheet Take the practice exam It is no good to memorize answers You have to understand and remember how you construct the answers



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