PracticeExam2-EP1-S08

PracticeExam2-EP1-S08 - Engineering Physics 1(Phys 213...

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7 Engineering Physics 1 (Phys. 213) Practice Exam 2, Feb. 22 nd , 2008 (O’Shea) Name __________________________________ Instructions: Please Read! This is a closed book, closed notes exam. This exam contains multiple-choice questions and problems. For each multiple-choice question, circle the letter of the best response. For problems, you need to show your work in a professional manner and write the final numerical answer with the proper unit in the space shown. Numerical answers without supporting calculations will receive zero credit. Partial credit is available only if your work is clear. 1. Academic honesty statement. This exam will NOT be marked unless you sign the academic honesty statement below. Your signature indicates that you have read , understood , and complied with the meaning of this statement. On my honor as a student I have neither given nor received unauthorized aid on this assignment. Sign your name:__________________________________________________________ 2. (1 point) Circle your Studio instructor/hour: Lynch /TU 9:30 Matloob /TU 11:30 Regehr /TU 1:30 O’Shea/WF 7:30 Lynch /WF 9:30 Page total: /1 Page total: /15 Total: /100
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8 3. A mass m of 2 kg is pressed against a wall by a horizontal force of magnitude F as shown. The smallest value F can have without the mass slipping down the wall is 30 N. What is the coefficient of static friction between the mass and the wall? . 4. A worker pulls on a 12 kg crate with a force of magnitude 110 N at θ = 30 0 above the horizontal as shown. The coefficient of static friction between the crate and the floor is 0.60 and the coefficient of kinetic friction between the crate and the floor is 0.30. a) What is the value of f s,max , the maximum value of the static friction force? b) Determine the acceleration of the crate c) What is the value of the frictional force exerted on the floor by the crate (give direction as well) F 1 θ m F r
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9 5. Two blocks are connected via a string over a pulley. The
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This note was uploaded on 04/07/2008 for the course PHYS 213 taught by Professor Oshea during the Spring '08 term at Kansas State University.

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PracticeExam2-EP1-S08 - Engineering Physics 1(Phys 213...

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