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Homework Help: Restoring moment

  1. Feb 25, 2016 #1
    1. The problem statement, all variables and given/known data
    why the restoring moment in diagram 3-48 must be in anti-clockwise direction ? cant be in clockwise direction ? pls refer to the last photo ( i sketched it) , if the B' is located on the left of the G , teh restoring moment is clockwise, right ?

    2. Relevant equations

    3. The attempt at a solution

    Attached Files:

  2. jcsd
  3. Feb 25, 2016 #2


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    That's what you get for attaching pages and pages of unsharp hard to read print : I can't even find 3-48 !
  4. Feb 25, 2016 #3


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    A restoring moment (as the term is used in this text) is a moment that tends to oppose the tilt of the boat. Since the boat is tilting clockwise, as viewed, a restoring moment is necessarily anticlockwise. As the diagram shows (3-46, not 3-48), when the moment reinforces the tilt it is called an overturning moment.
    Your own diagram shows the boat tilting anticlockwise, so yes, in that case a restoring moment would be clockwise.
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