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August 4, 2015

Homework Help: physics

Posted by Anonymous on Tuesday, December 4, 2007 at 12:24am.

Two window washers, Bob and Joe, are on a 3 m long, 345 N scaffold supported by two cables attached to its ends. Bob, who weighs 750 N stands 1 m from the left end, as shown in Figure 8.37. Two meters from the left end is the 500 N washing equipment. Joe is .5 m from the right end and weighs 1000 N. Given that the scaffold is in rotational and translational equilibrium, what are the forces on each cable?

I got the wrong answer.
(1m)(750N)+(2m)(500N)+(3m)(1000N)+(1.5m)(345N)=5267.5/3m=1756 N
(750N+500N+1000N+345N)-1756N=839N

The answer is suppose to be 1590N and 1005N.

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