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p201f08hw04b

# p201f08hw04b - MasteringPhysics Assignment Print View Page...

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IUPhysicsP201F2009 Assignment 4b Due at 11:00pm on Sunday, September 28, 2008 Assignment Display Mode: View Printable Answers View Grading Details Conical Pendulum I Description: 2D pendulum with the mass moving in a horizontal circle. Given the length of the string and the angle from the vertical, find the linear and angular speed of the mass. (symbolic only) A bob of mass is suspended from a fixed point with a massless string of length (i.e., it is a pendulum). You are to investigate the motion in which the string moves in a cone with half-angle . Part A What tangential speed, , must the bob have so that it moves in a horizontal circle with the string always making an angle from the vertical? Part A.1 What's happening here? In this situation, which of the following statements is true? ANSWER: The bob has no acceleration since its velocity is constant. The tension in the string is less than . A component of the tension causes acceleration of the bob. If the tension in the string would be greater than . Part A.2 Find the vertical acceleration of the bob What is , the vertical component of the acceleration of the bob? Page 1 of 11 MasteringPhysics: Assignment Print View 9/17/2008 http://session.masteringphysics.com/myct/assignmentPrint?assignmentID=1144569

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