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Torque and a Diving Board

  1. Apr 1, 2012 #1
    1. The problem statement, all variables and given/known data

    Calculate the torque (magnitude and direction) about the front support post (B) of a diving board , exerted by a 60 kg person 3.0 m from that post. See picture.

    2. Relevant equations

    τ = Fr

    3. The attempt at a solution

    τ clockwise = τ counterclockwise

    (60 kg)(9.8 m/s^2)(4.0 m) = τ counterclockwise

    I used "A" as the origin. Did I approach this incorrectly?
     
    Last edited: Apr 1, 2012
  2. jcsd
  3. Apr 1, 2012 #2

    cepheid

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    They asked you to compute the torque around point B.

    Also, you just need to compute the torque due to the person
     
  4. Apr 1, 2012 #3
    Oh I see. By using 4.0 m I considered the torque around point A.

    (60 kg)(9.8 m/s^2)(3.0 m) ≈ 1800 N * m
     
  5. Apr 1, 2012 #4

    cepheid

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    Seems okay
     
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