quiz4 - Physics 213, Quiz 4 4:30 PM, Nov. 4, 2011 T. Bolton...

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Physics 213, Quiz 4 4:30 PM, Nov. 4, 2011 T. Bolton Name Instructions. Print and sign your name on this quiz and on your scantron card. In doing so, you are acknowledging the KSU Honor Code: “On my honor as a student I have neither given nor received unauthorized aid on this assignment.” For two quick points, circle your studio instructor: Nemzer(TU 7:30) Bolton(TU 9:30) Nemzer(TU 11:30) Le(TU 1:30) Laurent(TU 3:30) Pavlov(WF 7:30) Pavlov(WF 9:30) Von Kor f (WF 11:30) Work alone and answer all questions. Part I questions must be answered on the Scantron cards. Putyournameonyourcard . Co lorinthecorrectboxcomp lete lyforeveryanswerw ithapenc i l . If you make a mistake, erase thoroughly. Don’t forget to color in the boxes for your WID. If we have to correct this by hand we may take o f f ve points from your score! Part II must be answered in the space provided on the test. The last page is a detachable equation sheet. You may use a calculator. You may ask the proctors questions of clari f cation. Show your work in a clear and organized manner. You may receive partial credit for partial solutions. Solutions lacking supporting calculations will receive no points. Kirk Schulz here. For once a Bolton quiz that not so bad!. Remember that rotation axes that coincide with points where forces act are good, and that we can’t have rolling without static fraction. And I did not hire this guy!
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Part I: Multiple choice questions to be answered on your Scantron card (45 points total). AD C B F 1 F 2 The f rst three problems refer to the f gure above. A uniform beam rests on the two triangular supports that provide forces F 1 and F 2 acting on the beam. The right hand support remains f xed, but the left hand support can move to the positions A D showninthe f gure. 1. (3 points) Which position for the left hand support cannot produce static equilibrium for the beam? 2. (3 points) Which position for the left hand support produces static equilibrium with F 2 ' 0 ? 3. (3 points) Which position for the left hand support produces static equilibrium with the smallest value for F 1 ? 4. (3 points) If a cat falls out of out a tree, it almost always manages to land on its feet, no matter how it rotates as it falls. What does the cat do to make this happen? (a) It changes its rotational inertia.
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quiz4 - Physics 213, Quiz 4 4:30 PM, Nov. 4, 2011 T. Bolton...

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