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Physics: Question about moments? Please explain the answer?

http://tinypic.com/view.php?pic=ibxvs3&s=8#.VN00Hb...

The question is in the link. Thank you ever so much :))))

1 Answer

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  • Steve
    Lv 7
    6 years ago
    Favorite Answer

    ΣM = 0

    R*4 = 32*g*0.75

    R = 58.8 N

    b) Because that force has a zero moment arm & ergo zero moment

    You're ever so welcome...

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