Coefficient of Friction - Mechanics, Heat and Wave Motion - Solved Exam, Exams of Mechanical Engineering

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PHYSICS 149 FINAL EXAM 16 December, 2000 This 30-question test is worth 200 points, cach question is weighted equally. Please Gill out the answer shee! with soft load pencil. He sure to give your name, student ID 4, date, Course #, Final Exam, and SIGN the answer sheet. Be prepared Wo present your Student picture ID card when handing in your answer sheet. You may keep the sheets with the questions and your work. Pick the nearest value for your aniwet (there may be slight roundeff errors). Don't get bung up too long over any one question unti] you have cried all of them. Bring your own “crib sheet"; here’s mine: g=9.8m/s* G= 6.67010"'Nmn7kg? voy, + at foreach vector compondil of v and a } for constant X™ xy # Vet + izat amd ditto for y and z components } a ve -va? = Za(h-ao} ete. . ) X=Mp #8 GN, +} atc, } average y,= Ax‘At tc, averages = AwfAt and etc. for each componcmt x=reoa(h} y=rsin(®) tan(B) = yix The Earth's mass and radius are $.98 x10" kg and 6.39% 10°, respectively F=me Fof AonB= -FofBonA f= Nl iw = oN Vreimive = ¥2- ¥) (2 relative to 1) F, =ma av rea: F,=mg Fo =GMma* iff, =Fo, then tiv? = GMmvr and T7'GM = (2n)*r* TSVE saat 2m rad © Lrev = 360° Work = W = F cas? 5 KE =iamv PE =mgh ME =PE+KE AME = APE+ AKE= Wy If non-conservative work = 0, then ME is conserved: AME = 0 = PE;+ KE,;- PE, - KE, Power = P= Wit T=F At = Ap p=myvy = [fsystem is isolated, p = constant, that is, pr= py for entire eystem (conserved) [-D Elastic | ¥p = Yo (my - mpyGm, + ma} + 2 von mie tiny + 1g} Vag ¥og (my = tobi, + mk + 2 Wo md My, Xem = Em, x, Emi Ap @=ar w= pr @ apr B) =s Te vT rot = a, Jf ais constant, use equations (A} Io convert ihe equations for constant accelcration, a, into the angular (radians) warld.