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-   -   Jill and Tension (https://www.askmehelpdesk.com/showthread.php?t=513227)

  • Oct 3, 2010, 03:53 PM
    heyyalliee
    Jill and Tension
    Given:Jill of the Jungle swings on a vine 6.0 m long.

    What is the tension in the vine if Jill, whose mass is 57 kg, is moving at 2.8 m/s when the vine is vertical?

    I believe I am going about this the wrong way. Any Guidance would be awesome.
  • Oct 3, 2010, 04:47 PM
    galactus

    Since Jill is moving at v=2.8 m/s
    at the bottom of the swing, then we can use



    Sub in the givens along with R=6 and find the tension in Newtons.
    Remember, g=9.8 m/s^2
  • Oct 3, 2010, 04:57 PM
    heyyalliee

    Thank you so much! :)

    I got:

    57(2.8)^2/6 + 57(9.81)= 633
  • Oct 3, 2010, 09:40 PM
    Unknown008

    Hmmm don't forget your number of significant figures.

    The calculation gives 633.65 N which becomes 634 N to 3 sig. fig. :)

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