{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Final_Exam_F04_v3

Final_Exam_F04_v3 - NAME Recitation Instructor Physics 112...

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

View Full Document Right Arrow Icon
NAME Recitation Instructor: Recitation Section #: Physics 112 December 13, 2004 Final Exam 3 - 5:30 PM PLEASE BE SURE THIS PACKET HAS 12 PAGES! ( This includes the cover sheet and a scrap page.) This packet contains 6 Short Answer Questions, 4 Problems, 2 pages of Possibly Useful Information, and a page of scrap paper near the end. You may also use the backs of pages for scrap. WORK ON SCRAP PAPER WILL NOT BE GRADED. Write your answers ON THESE QUESTION SHEETS in the spaces provided. For Short Answer Questions #1-6, ONLY ANSWERS WILL BE GRADED. For Problems #7-10, where algebra or computations are required, BE SURE YOUR METHOD OF SOLUTION IS CLEAR, and SHOW YOUR WORK in the spaces provided. If you need more space, use the backs of the question sheets and indicate the whereabouts of your work for each question. ANSWERS WITHOUT WORK will NOT receive credit (except for short answer questions). WORK ON SCRAP PAPER WILL NOT BE GRADED. Point values for questions are given below. BUDGET YOUR TIME. Don't spend too much time on any one question or part of a question. Answer those questions you can do easily first, and then return to the more difficult ones. It is valuable use of your time to READ THE ENTIRE EXAM before starting to work on it. This is a CLOSED BOOK and CLOSED NOTES exam. You may NOT use any other references or personal assistance. You MAY use a NON-GRAPHING calculator. For Grading Only: (Do not write here.) 1-3 /14 7 /15 4-5 /12 8 /10 6 /14 9 /15 10 /20 TOTAL /100
Image of page 1

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

View Full Document Right Arrow Icon
NAME 2 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 0 0.5 1 1.5 2 Time (s) Position (cm) I. SHORT ANSWER [40 points] Please write your answers in the spaces provided. 1. [4 points] What is the approximate quality factor Q for this damped harmonic oscillation? (A) < 1 (B) 1 (C) 3 (D) 10 (E) 30 (F) 100 (G) 300 (H) 1000 (K) > 1000 Answer: 2. [4 points] A spool resting on a horizontal surface has a string wrapped around its axle, as shown. When the string is pulled, which way will the spool roll? (A) To the right ( ) (B) To the left ( ) (C) It won't roll. Answer: 3. [6 points] A bowling ball starts sliding to the left ( ) with speed v o on a horizontal surface without spinning. As the ball slides along the surface, it begins to spin, eventually rolling to the left without slipping with speed v f and Final Initial angular speed ω f . The bowling ball's radius = R, mass = m, and moment of inertia about its center-of-mass = I CM . Which of the following statements is/are true ? Please list the letters for all that apply. (A) mv o = mv f + I CM ω f (D) mv o = (mv f ) 2 + (I CM ω f ) 2 (B) 1 2 mv o 2 = 1 2 mv f 2 + 1 2 I CM ω f 2 (E) v o = R ω f (C) mv o R = mv f R + I CM ω f (F) v f = R ω f (G) None of these are true. Answer: Pull v o v f ω f
Image of page 2
NAME 3 4. [12 points] A spinning wheel of mass M and radius R is precessing freely on a fixed pivot, as shown.
Image of page 3

Info icon This 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 ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern