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Unformatted text preview: Physics 6B January 26, 2009 Katsushi Arisaka First Midterm (Type B) Last Name: _______________________ First Name: ______________________ Student ID No. ____________________ Enrolled Lecture: 1 (11am) / 2 (Noon) Exam Time: 11am / Noon Important Remarks: Sorry to tell you but during the exam, close books, close notes, no calculator is allowed; please just rely on your own brain. Please use any open space on the exam for your solution. Please write down how you derived concisely (which helps you to get a partial credit, even if the final answer is wrong.) Even if you finish early, please be seated quietly until the exam time is over. Points: Question Your Points Full Points 1 5 point 7 = 35 2 5 point 3 = 15 3 6 pt 3 + 8 pt = 26 4 4 point 6 = 24 Total 100 Question: In this exam, we explore a simple mass-spring system only. A mass (with mass m ) is connected to a spring (with spring constant k ) as shown below. There is no friction on the floor. At t = 0, the mass stays at the initial position x = 0, where there is no force from the spring. Then the mass is suddenly = 0, where there is no force from the spring....
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- Winter '09