p201f08hw03b - MasteringPhysics Assignment Print View Page...

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IUPhysicsP201F2009 Assignment 3b Due at 11:00pm on Sunday, September 21, 2008 Assignment Display Mode: View Printable Answers View Grading Details Problem 4.15 Description: A person stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only a of the person's regular weight. (a) Calculate the magnitude of the acceleration of the elevator. (b) Find the direction of . .. A person stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only 0.88 of the person's regular weight. Part A Calculate the magnitude of the acceleration of the elevator. Express your answer using two significant figures. ANSWER: = Part B Find the direction of the acceleration. ANSWER: Downward Upward Problem 4.12 Description: A m bucket is lowered vertically by a rope in which there is F_T of tension at a given instant. (a) What is the acceleration of the bucket? (b) Is it up or down? A 15.0 bucket is lowered vertically by a rope in which there is 185 of tension at a given instant. Part A What is the acceleration of the bucket? Express your answer using two significant figures. ANSWER: = Page 1 of 22 MasteringPhysics: Assignment Print View 9/17/2008 http://session.masteringphysics.com/myct/assignmentPrint?assignmentID=1144562
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Part B Is it up or down? ANSWER: down up Problem 4.4 Description: (a) What is the weight of a m astronaut on Earth? (b) What is the weight of a m astronaut on the Moon? g = 1.7 (m/s)^2. .. (c) What is the weight of a m astronaut on Mars? g = 3.7 (m/s)^2. .. (d) What is the weight of a m astronaut in outer space. .. Part A What is the weight of a 83 astronaut on Earth? Express your answer using two significant figures. ANSWER: = Part B What is the weight of a 83 astronaut on the Moon? Express your answer using two significant figures. ANSWER: = Part C What is the weight of a 83 astronaut on Mars? Express your answer using two significant figures. ANSWER: = Part D What is the weight of a 83 astronaut in outer space traveling with constant velocity? Express your answer using two significant figures. ANSWER: = Motion of a Block with Three Forces Description: Given the magnitudes and directions of three forces, find magnitude and direction of resultant force on a block. Then find the acceleration of the block and its velocity after five seconds. (version for algebra-based Page 2 of 22 MasteringPhysics: Assignment Print View 9/17/2008 http://session.masteringphysics.com/myct/assignmentPrint?assignmentID=1144562
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courses) Three forces of magnitudes , , and are applied to a block of mass , initially at rest, at angles shown on the diagram. In this problem, you will determine the resultant (net) force by combining the three individual force vectors. All angles should be measured counterclockwise from the positive x axis (i.e., all angles are positive). Part A
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p201f08hw03b - MasteringPhysics Assignment Print View Page...

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