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lostindividual

  • 3 years ago

A 85.3 kg ice skater is moving at 4.38 m/s when she grabs the loose end of a rope, the op- posite end of which is tied to a pole. She then moves in a circle of radius 0.564 m around the pole. Find the force exerted by the rope on her arms. The acceleration of gravity is 9.8 m/s2 . Answer in units of kN

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  1. imron07
    • 3 years ago
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    |dw:1349481863357:dw| Can you figure what the answer now?

  2. lostindividual
    • 3 years ago
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    maybe if i see the formula

  3. imron07
    • 3 years ago
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    Force on skater's arm is centripetal force that makes her move in circle with speed 4.38 m/s.

  4. imron07
    • 3 years ago
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    \[F=\frac{mv^2}{r}\]

  5. lostindividual
    • 3 years ago
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    i tried that the solution i got was 2901.470426 but the computer said it was incorrect

  6. imron07
    • 3 years ago
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    Do you put your ans in kN? (2.9 kN)

  7. lostindividual
    • 3 years ago
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    i didnt thank u

  8. Decart
    • 3 years ago
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    try g=v^2/r the mass shouuld cancel

  9. lostindividual
    • 3 years ago
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    i got it thanks

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