Unformatted text preview: PHYS 102
Spring 2008 Exam #3 Study Guide
These are the equations and instructions that will appear on the first page of the exam: DO NOT OPEN THIS EXAM UNTIL INSTRUCTED TO DO SO. THE ONLY ITEMS YOU MAY USE DURING THE EXAM ARE A WRITING INSTRUMENT AND CALCULATOR. PLEASE SILENCE AND PUT AWAY YOUR CELL PHONE!
Equations Kinematics (constant acceleration) 1 x = xo + vox t + a x t 2 2 v x = vox + a x t
2 v 2 = vox + 2a x (x - xo ) x 1 = o + o t + t 2 2 = o + t
2 2 = o + 2 ( - o ) v = r atan = r Dynamics Fx = ma x Fy = ma y W = mg Fspring = k x Fg = mg f s s n f k = k n Gm1m2 FG = r2 Conservation Laws (Only conservative forces) K + U total = 0 Simple Harmonic Motion v2 U g = mgh r W = F * d U spring = 1 kx 2 2 W net = K p = mv 1 = r F = rF K = mv 2 2 ac = I = mr 2 net = I 1 K rot = I 2 2 L = I (Nonconservative forces) K + U total = W f pi = p f Li = L f =
x = Acos(t) v = -Asin(t) a = - 2 Acos(t) k m 2 T= 1 f = = T 2 1 U = kA 2 cos 2 (t) 2 1 K = kA 2 sin 2 (t) 2 1 E tot = kA 2 2 Pendulum: =
g L For the free-response items on this exam, you must clearly show your work, starting from one or more of the equations above, in order to earn credit for your response. Numerical answers without any supporting work will receive zero credit, even if they are correct. Numerical answers must include units!! Topics Tested on Exam Rotational Motion Application of kinematics equations to rotational situations Application of Newton's laws for linear motion and rotation to moving and static situations Application of conservation of angular momentum to rotating systems Simple Harmonic Motion Determination of amplitude, period, and frequency of block and spring system Determination of kinetic and potential energy of block and spring system Application of simple harmonic motion principles to pendulum Suggested Review Multiple Choice Questions at the end of Chapters 9, 10, and 11; answers to oddnumbered questions in text Practice HW Assignments in Mastering Physics (Chapters 9-11) In-class questions and problems (solutions posted in D2L) ...
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