anonymous
  • anonymous
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
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
|dw:1349481863357:dw| Can you figure what the answer now?
anonymous
  • anonymous
maybe if i see the formula
anonymous
  • anonymous
Force on skater's arm is centripetal force that makes her move in circle with speed 4.38 m/s.

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anonymous
  • anonymous
\[F=\frac{mv^2}{r}\]
anonymous
  • anonymous
i tried that the solution i got was 2901.470426 but the computer said it was incorrect
anonymous
  • anonymous
Do you put your ans in kN? (2.9 kN)
anonymous
  • anonymous
i didnt thank u
anonymous
  • anonymous
try g=v^2/r the mass shouuld cancel
anonymous
  • anonymous
i got it thanks

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