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Math Help - Newton's second law and centripetal forces

  1. #1
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    Lightbulb Newton's second law and centripetal forces

    An astronaut in training rides in a seat that is moved in uniform circular motion by a radial arm 5.40 meters long. If her speed is 15.0 m/s, what is the centripetal force on her in "G's," where one G equals her weight on the Earth? please help me! anyone! a million thanxs before hand.
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  2. #2
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    F_c = \frac{mv^2}{r}

    \frac{F_c}{mg} = value of the centripetal force in "g's"
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