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I received this question and was rather confused as to how to apporach solving it:

Water drops shaken off the rim of a rotating umbrella meet the ground in a circle. If you rotated an umbrella making one revoution per second, what would you expect the radius of the circle formed by the drops to be. Justify all values used and define all variables.

I tried to draw a diagram labelling the radius of the umbrella as x and the radius of the drops as x+y and use Keplers's third law of planetary motion, but was unsuccessful. Any help would be greatly appreciated.

Cheers

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# Homework Help: Water Drops Shaken off an Umbrella

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