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MIT 8.02 Electricity and Magnetism, Spring 2002 14 Online
OpenStudy (anonymous):

is any gravity motor practically possible ?

OpenStudy (ujjwal):

no its not. all such motors u might have seen on internet or elsewhere they all simply execute simple harmonic motion.. you have to supply energy in the beginning.. it'll continue its motion unless there's enough damping.. ultimately they all stop their motion. even a simple pendulum does that.. P.S. Gravity is no source of energy.. (it converts PE to KE)..

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