Gravity on a half shell

Details Gravity on a half shell Gravity on a half shell

Dec 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987amjph..55.1096t&link_type=abstract

American Journal of Physics, Volume 55, Issue 12, pp. 1096-1098 (1987).

Physics

Scientific paper

Although much attention has been given recently to treating the troublesome ``preconceptions'' that beginning students have acquired concerning elementary kinematics and dynamics, higher-order misconceptions should not be ignored by instructors. In this article, the problems students have with Newtonian gravitation and extended bodies are examined. A three-step program involving a classroom exercise (the mass dipole), a homework problem (thin, massive rod), and an extra-credit assignment (thin, hemispherical shell-``gravity on a half shell'') is suggested in order to increase student understanding of this important law of nature.

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