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Two particles of equal masses are revolving in circular paths of radii r1 and r2 respectively with the same speed. The ratio of their centripetal forces is

(1) $\frac{{r}_{2}}{{r}_{1}}$

(2) $\sqrt{\frac{{r}_{2}}{{r}_{1}}}$

(3) ${\left(\frac{{r}_{1}}{{r}_{2}}\right)}^{2}$

(4) ${\left(\frac{{r}_{2}}{{r}_{1}}\right)}^{2}$