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March 28, 2017

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A man of mass 65.2 kg stands on a scaffold supported by a vertical rope at each end. The scaffold has a mass of 22.7 kg and is 2.4 m long. Suppose the man stands to the right from the middle of the scaffold that is a distance one sixth of the length of the scaffold. What is the tension in the right rope?

  • Physics - ,

    the cg is at 1.2m from the left, and the man stands at (1.2+.4) from the left.

    sum moments around the left end:

    65.2*g*1.6+22.7*g*1.2 - Tr*2.4=0 solve for tension in the right rope Tr.
    check carefull that sum of moments equation.

  • Physics - ,

    How about for the left rope? Would it be the same thing? or negative instead?

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