Recent content by natux

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    At how many rpms will a blade tip break the sound barrier

    Thanks, I got it figured out, I don't know why this confused me so much...
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    At how many rpms will a blade tip break the sound barrier

    Sorry, the 9 is in radians per second, but the problem is I get stuck there. I know I need the linear speed...but I don't how to go about doing that in this situation.
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    At how many rpms will a blade tip break the sound barrier

    Homework Statement The windmill is 400 feet tall and each of it's three blades are 130 feet long. At how many rpms will a blade tip break the sound barrier? Speed of sound: 1125ft/sec Homework Equations Linear speed: v = rω Angular speed: ω = Θ/Time The Attempt at a Solution...