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Unformatted text preview: MATH 251 Fall 2003 Exam 2 November 10, 2003 NAME : ID : INSTRUCTOR : There are 10 questions on 9 pages. Please read each problem carefully before starting to solve it. For each multiple choice problem 4 answers are given, only one of which is correct. Mark only one choice. For partial credit questions, all work must be shown credit will not be given for an answer unsupported by work. N O CALCULATORS ARE ALLOWED . P LEASE DO NOT WRITE IN THE BOX BELOW . 1: 2: 3: 4: 5: 6: 7: 8: 9: 10: Total: MATH 251 Fall 2003 MidTerm Exam 2 1. (5 points) A spring-mass system, subject to an external force of 10 cos(2 t ) Newtons, is equipped with a spring with a Hookes constant 12 Newtons per meter. For what mass will the resonance occur? (a) 2 kg (b) 3 kg (c) 6 kg (d) 10 kg 2. (5 points) Of what form will the particular solution to the following differential equa- tion be? Do not solve the equation....
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