Posted by **myra** on Wednesday, April 11, 2012 at 6:32pm.

A motorcycle stunt rider wants to do a loop-the-loop within a vertical circular track. If the radius of the circular track is 10.0 m, what minimum speed must the motorcyclist maintain to stay on the track?

Suppose the radius of the track was doubled. By what factor will the motorcyclist need to increase her speed to loop-the-loop on the new track?

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