A motorcycle is traveling up one side of a hill and down the other side. The crest of the hill is a circular arc with a radius of 58.0 m. Determine the maximum speed that the cycle can have while moving over the crest without losing contact with the road. V=l : Concept Simulation 5.1 reviews the concepts that are involved in this problem. A child is twirling a 0.0240-kg ball on a string in a horizontal circle whose radius is 0.136 m. The ball travels once around the circle in 0.610 s. (a) Determine the centripetal force acting on the ball. (b) If the speed is doubled, by what factor does the centripetal force increase? J\"_,_._ ~.0'k\" /' r \\\\ I \\ L 7 r l \\ .7 /'.'3' " \\ 'y ' K\" | A" (I \\____ r, .._r:~_______. 4) (a) Number I Units (b) Number a Units 4}