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The Physics Teacher -- September 2002 -- Volume 40, Issue 6, pp. 374

A Friction Experiment

Leo Takahashi

Department of Physics, Penn State Beaver, Monaca, PA 15061

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Force-sensor friction experiments such as the one in Vernier Software’s Physics with Computers depend on an object moving with constant velocity in order to measure the force of kinetic friction; when a block is pulled by a horizontal force sensor and the block moves along a horizontal surface with constant velocity, Newton’s first law ensures that the force-sensor reading is a measure of the frictional force. The difficulty in performing the experiment is that it associates kinetic friction only with constant speeds. This experiment offers a way of avoiding this difficulty.

© 2002 American Association of Physics Teachers

KEYWORDS and PACS

Keywords

teaching, educational aids, student experiments, force measurement, sliding friction

PACS

  • 01.50.My

    Demonstration experiments and apparatus

  • 01.50.Pa

    Laboratory experiments and apparatus

  • 45.40.Cc

    Rigid body and gyroscope motion

History
Online Nov 2002

PUBLICATION DATA

ISSN

0031-921X (print)  

Publisher

$abstract.society.value is a Member of CrossRef American Association of Physics Teachers

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1119/1.1511597

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