Centripetal force:

$\overline{){\mathbf{F}}{\mathbf{=}}\frac{\mathbf{m}{\mathbf{v}}^{\mathbf{2}}}{\mathbf{r}}}$

The tension in the string is equal to the centripetal force.

v and m is equal for both.

Centripetal force is inversely proportional to the radius.

The figure(figure 1) shows two balls of equal mass moving in vertical circles

Is the tension in string A greater than less than, or equal to the tension in string B if the balls travel over the top of the circle with equal speed?

a. The tension in string A is greater than the tension in string B

b. The tension in string A is less than the tension in string B

c. The tension in string A is equal to the tension in string B

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