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Physics 18 Online
OpenStudy (anonymous):

Solving physics with discrete time step instead of continuous variable. Is this done normally?

OpenStudy (unklerhaukus):

how small are the time steps ?

OpenStudy (ivancsc1996):

Yes. Usually problems are to hard to solve analytically as a function of time requiring in most cases the aid of computers. Never the less, discrete time allows you to use conservation laws to gain important information of notable moments in the systems evolution.

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