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Physics 11 Online
OpenStudy (anonymous):

The rectangular door shown in the figure is supported by hinges at A and B and the cable CD. Mb is the moment at hinge B due to the tension in the cable T. If the magnitude of Mb is 3000 lb-in, determine: http://imgur.com/kC3LK1Q (I can't even get the first part. any help would be appreciated!! is T the distance from C to D or is it that little sliver T at the bottom?

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