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Unformatted text preview: 0/13» ' PHYS 122 EXAM 1 September 29, 2011
Prof. S.M. Bhagat Name: Safufﬁ 0“ (Sign in ink, print in pencil) Notes 1. There are six (6) problems in this exam. Please make sure that your copy has all of
them. 2. V Please show your work, indicating clearly what formula you used and what the
symbols mean. Just writingthe answer will not get you full credit. In stating vectors,
give both magnitude and direction. . 3. Write your answers on the sheets provided.
4. Do not forget to write the units.
5. Do not hesitate to ask for clariﬁcation at any time during the exam. You may buy a , formula at the cost of one point. Take Care! God Bless You! 2‘
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as shown on a horizontal frictionless table. The spring is unstretched at x = 0. mm.” MW». Wat“ WMWWWMW
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a) If you pull the mass to X = A, what is the potential energy? (5)
b) When you release the mass, Why does it oscillate? _ g (5)
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and t a time Justify the quantities yOu need to introduce and explain their physicalsigniﬁcance. (10) m‘méwQMM/MW 5m “63% ,5» We: Mesawk. 73 Via/3 ‘ — 1.4
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D = 2 N/m2 + 2.1 N/m2 cos(6.28 x + 12.560 , ' 4 Do you think that such a wave can exist? Why? (5)
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 Fall '11
 Bhagat
 Physics

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