The work-kinetic energy theorem is one of the fundamental and more subtle concepts students see in their freshman physics course. As it is derived infinitesimally, it is usually used in its integrated form. It is challenging for students to appreciate the work-kinetic energy theorem in the case of a variable force acting over some displacement. Using a motion sensor, a dual range force sensor, and the LabPro computer interface with its Logger Pro software1 and a dynamics track and cart,2 it is possible to demonstrate the concept in a convincing and straightforward manner.
REFERENCES
1.
Vernier Software & Technology, http://www.vernier.com. Logger Pro version 3.3 was used in this demonstration.
2.
PASCO scientific, http://www.pasco.com.
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© 2006 American Association of Physics Teachers.
2006
American Association of Physics Teachers
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