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m1 - moments confusion (REALLY quick question!) watch

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    when a rod is in equilibrium, you equate the moment equation to 0.

    when a rod is tilting about point C, what do you equate the moment to?
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    (Original post by dumb maths student)
    when a rod is in equilibrium, you equate the moment equation to 0.

    when a rod is tilting about point C, what do you equate the moment to?
    You can still take moments about any point.
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    When the rod is tilting about point C and there is also another support then the Reaction at that support becomes 0. You can still take moments normalls though.
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    but when you do take the moment about any point, what do you make it equal to?

    if it's in equilibrium, you make it equal to 0, then solve from there. however, when it's tilting, it can't be equal to 0, right? so what is it equal to? :O

    thats my question
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    (Original post by dumb maths student)
    but when you do take the moment about any point, what do you make it equal to?

    if it's in equilibrium, you make it equal to 0, then solve from there. however, when it's tilting, it can't be equal to 0, right? so what is it equal to? :O

    thats my question

    The Anitclockwise moments = The clockwise moments

    That should help
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    (Original post by dumb maths student)
    but when you do take the moment about any point, what do you make it equal to?

    if it's in equilibrium, you make it equal to 0, then solve from there. however, when it's tilting, it can't be equal to 0, right? so what is it equal to? :O

    thats my question
    If its in equilibrium the moments sum to zero.
 
 
 
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Updated: January 13, 2010
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