I found an old clock in the basement and determined that its minute and hour hands have lengths in the precise ratio of 2:1, the minute hand being the longer. Having nothing else to do, I mounted a miniature radar speed recorder on the tip of the hour hand and arranged for it always to point to the tip of the minute hand. How much time will elapse after the greatest negative (receding) speed has been recorded until the greatest positive (approaching) speed is recorded?

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## bonanova

I found an old clock in the basement and determined that its minute and hour hands have lengths in the precise ratio of 2:1, the minute hand being the longer. Having nothing else to do, I mounted a miniature radar speed recorder on the tip of the hour hand and arranged for it always to point to the tip of the minute hand. How much time will elapse after the greatest negative (receding) speed has been recorded until the greatest positive (approaching) speed is recorded?

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