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written by Gary Gladding
published by the University of llinois Physics Education Research Group
This is an interactive homework problem for introductory physics students relating to torque due to frictional force.  A 1050 kg sign is attached to a rod perpendicular to a rough wall.  A guy wire is affixed to the end of the rod and to the wall, bearing the load of the sign.  Students must determine the smallest value of coefficient of friction possible for the sign to stay in place.  A user-activated "help" sequence is provided for each step of the problem-solving, from conceptual analysis through quantitative calculation. Immediate feedback is received for both correct and incorrect responses.  

This item is part of a larger collection of interactive homework problems for introductory physics.  See Related items on this page for a link to the full collection.
Subjects Levels Resource Types
Classical Mechanics
- Applications of Newton's Laws
= Dynamic Torque
= Friction
Education Practices
- Active Learning
= Problem Solving
- Lower Undergraduate
- Instructional Material
= Activity
= Best practice
= Curriculum support
= Tutorial
Intended Users Formats Ratings
- Learners
- text/html
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Free access
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© 2006 University of Illinois Physics Education Research Group
Keywords:
friction, homework problem, interactive problem, static equilibrium, torque
Record Cloner:
Metadata instance created February 3, 2008 by Alea Smith
Record Updated:
March 12, 2013 by Lyle Barbato
Last Update
when Cataloged:
June 16, 2006
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Record Link
AIP Format
G. Gladding, (University of llinois Physics Education Research Group, Urbana, 2006), WWW Document, (http://research.physics.illinois.edu/per/IE/ie.pl?phys101/ie/08/sign).
AJP/PRST-PER
G. Gladding, Illinois PER Interactive Examples: Hanging Sign, (University of llinois Physics Education Research Group, Urbana, 2006), <http://research.physics.illinois.edu/per/IE/ie.pl?phys101/ie/08/sign>.
APA Format
Gladding, G. (2006, June 16). Illinois PER Interactive Examples: Hanging Sign. Retrieved October 30, 2014, from University of llinois Physics Education Research Group: http://research.physics.illinois.edu/per/IE/ie.pl?phys101/ie/08/sign
Chicago Format
Gladding, Gary. Illinois PER Interactive Examples: Hanging Sign. Urbana: University of llinois Physics Education Research Group, June 16, 2006. http://research.physics.illinois.edu/per/IE/ie.pl?phys101/ie/08/sign (accessed 30 October 2014).
MLA Format
Gladding, Gary. Illinois PER Interactive Examples: Hanging Sign. Urbana: University of llinois Physics Education Research Group, 2006. 16 June 2006. 30 Oct. 2014 <http://research.physics.illinois.edu/per/IE/ie.pl?phys101/ie/08/sign>.
BibTeX Export Format
@misc{ Author = "Gary Gladding", Title = {Illinois PER Interactive Examples: Hanging Sign}, Publisher = {University of llinois Physics Education Research Group}, Volume = {2014}, Number = {30 October 2014}, Month = {June 16, 2006}, Year = {2006} }
Refer Export Format

%A Gary Gladding
%T Illinois PER Interactive Examples: Hanging Sign
%D June 16, 2006
%I University of llinois Physics Education Research Group
%C Urbana
%U http://research.physics.illinois.edu/per/IE/ie.pl?phys101/ie/08/sign
%O text/html

EndNote Export Format

%0 Electronic Source
%A Gladding, Gary
%D June 16, 2006
%T Illinois PER Interactive Examples: Hanging Sign
%I University of llinois Physics Education Research Group
%V 2014
%N 30 October 2014
%8 June 16, 2006
%9 text/html
%U http://research.physics.illinois.edu/per/IE/ie.pl?phys101/ie/08/sign


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Citation Source Information

The AIP Style presented is based on information from the AIP Style Manual.

The APA Style presented is based on information from APA Style.org: Electronic References.

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Illinois PER Interactive Examples: Hanging Sign:

Is Part Of Illinois PER: Interactive Examples

This is the full collection of homework problems by the same author.  It contains six problem sets classified by course level.

relation by Caroline Hall

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