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.
<a href="http://www.compadre.org/introphys/items/detail.cfm?ID=6435">Gladding, Gary. Illinois PER Interactive Examples: Hanging Sign. Urbana: University of llinois Physics Education Research Group, June 16, 2006.</a>
G. Gladding, Illinois PER Interactive Examples: Hanging Sign (University of llinois Physics Education Research Group, Urbana, 2006), WWW Document, (http://research.physics.illinois.edu/per/IE/ie.pl?phys101/ie/08/sign).
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>.
Gladding, G. (2006, June 16). Illinois PER Interactive Examples: Hanging Sign. Retrieved May 19, 2013, from University of llinois Physics Education Research Group: http://research.physics.illinois.edu/per/IE/ie.pl?phys101/ie/08/sign
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 19 May 2013).
Gladding, Gary. Illinois PER Interactive Examples: Hanging Sign. Urbana: University of llinois Physics Education Research Group, 2006. 16 June 2006. 19 May 2013 <http://research.physics.illinois.edu/per/IE/ie.pl?phys101/ie/08/sign>.
%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
%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 2013 %N 19 May 2013 %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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