If the 1600- l b boom A B , the 230- l b cage B C D , and the 161- l b man have

Question

If the 1600-lb boom AB, the 230-lb cage BCD, and the 161-lb man have centers of gravity located at points G1, G2 and G3, respectively, determine the resultant moment produced by all the weights about point A.

Here's a link to the image: http://session.masteringengineering.com/problemAsset/1529389/4/Hibbler.ch4.p26.jpg

If the 1600-lb boom AB, the 230-lb cage BCD, and the 161-lb man have centers of gravity located at points G1, G2 and G3, respectively, determine the resultant moment produced by all the weights about point A.

Explanation / Answer

1600*g*10*cos(75) +230*g*(30cos(75) +2.5) +161*g*(30cos(75) +4.25) =g*0.2588(16000+6900+4830)+g(575+684.25)

=8435.774*32.174 =271412lbft^2/s^2;

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