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A thin massless horizontal pipe rotates about a vertical axis with angular speed ω as shown in the figure. A small bug, located at a distance r from the axis, starts crawling inside the pipe at constant speed v (relative to the pipe). Because of the bug, the motor must develop the power
in order to keep the system rotating at constant angular speed ω. Determine the numerical coefficient C.

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  • yutfv - ,

    is the answer 0.25

  • yutfv - ,

    by what method did you find 0.25?

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