Atwood's machine

noun At·wood's machine \ˈat‧ˌwu̇dz-\

Definition of Atwood's machine

  1. :  an apparatus for demonstrating the laws of accelerated motion by means of a light nearly frictionless pulley wheel over which passes a thread having at its ends fairly heavy masses whose slight difference in weight is the cause of the acceleration

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Origin and Etymology of atwood's machine

after George Atwood †1807 English mathematician, its inventor


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