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Let-F-r-mkr-0-r-lt-R-mgR-2-r-2-r-R-find-D-F-




Question Number 159118 by physicstutes last updated on 13/Nov/21
Let F(r) =  { ((mkr,  0 ≤ r < R)),((((mgR^2 )/r^2 ), r≥ R)) :}  find D_F
$$\mathrm{Let}\:{F}\left({r}\right)\:=\:\begin{cases}{{mkr},\:\:\mathrm{0}\:\leqslant\:{r}\:<\:{R}}\\{\frac{{m}\mathrm{g}{R}^{\mathrm{2}} }{{r}^{\mathrm{2}} },\:{r}\geqslant\:{R}}\end{cases} \\ $$$$\mathrm{find}\:{D}_{{F}} \\ $$

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