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written by
Gary Gladding
published by
the University of llinois Physics Education Research Group
This interactive problem for introductory physics features two blocks of differing mass connected by a string over an ideal pulley located at the edge of a table. Students must determine the magnitude of acceleration on Block B, given the length of the string and the mass of each block. A user-activated "help" sequence is provided for each step of the problem-solving, including conceptual analysis, free-body diagrams, and help with calculations. Immediate feedback is received for both correct and incorrect responses. This resource is part of a larger collection of interactive homework problems for introductory physics.
<a href="https://psrc.aapt.org/items/detail.cfm?ID=6405">Gladding, Gary. Illinois PER Interactive Examples: Two Masses on a Table Edge. Urbana: University of llinois Physics Education Research Group, August 31, 2014.</a>
G. Gladding, (University of llinois Physics Education Research Group, Urbana, 2006), WWW Document, (https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys111/ie/03/ie_2_blocks_edge).
G. Gladding, Illinois PER Interactive Examples: Two Masses on a Table Edge (University of llinois Physics Education Research Group, Urbana, 2006), <https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys111/ie/03/ie_2_blocks_edge>.
Gladding, G. (2014, August 31). Illinois PER Interactive Examples: Two Masses on a Table Edge. Retrieved August 13, 2026, from University of llinois Physics Education Research Group: https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys111/ie/03/ie_2_blocks_edge
Gladding, Gary. Illinois PER Interactive Examples: Two Masses on a Table Edge. Urbana: University of llinois Physics Education Research Group, August 31, 2014. https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys111/ie/03/ie_2_blocks_edge (accessed 13 August 2026).
Gladding, Gary. Illinois PER Interactive Examples: Two Masses on a Table Edge. Urbana: University of llinois Physics Education Research Group, 2006. 31 Aug. 2014. 13 Aug. 2026 <https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys111/ie/03/ie_2_blocks_edge>.
@misc{
Author = "Gary Gladding",
Title = {Illinois PER Interactive Examples: Two Masses on a Table Edge},
Publisher = {University of llinois Physics Education Research Group},
Volume = {2026},
Number = {13 August 2026},
Month = {August 31, 2014},
Year = {2006}
}
%A Gary Gladding %T Illinois PER Interactive Examples: Two Masses on a Table Edge %D August 31, 2014 %I University of llinois Physics Education Research Group %C Urbana %U https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys111/ie/03/ie_2_blocks_edge %O text/html
%0 Electronic Source %A Gladding, Gary %D August 31, 2014 %T Illinois PER Interactive Examples: Two Masses on a Table Edge %I University of llinois Physics Education Research Group %V 2026 %N 13 August 2026 %8 August 31, 2014 %9 text/html %U https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys111/ie/03/ie_2_blocks_edge
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