Question

A child is twirling a 0.0116 kg ball on a string in a horizontal circle whose radius is 0.102 m. The ball travels once around the circle in 0.560 s.
(a) Determine the centripetal force acting on the ball.
N

(b) If the speed is doubled, does the centripetal force double?

yes
no


If not, by what factor does the centripetal force increase?

I was able to work the problem but i'm not sure what it means by factor for the third part of the problem. Please help.