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Mechanics friction question

Can anyone help me wit the mechanics question? I don't know how they get NB(0.9) when resolving the moments.


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Original post by hihihihihi
Can anyone help me wit the mechanics question? I don't know how they get NB(0.9) when resolving the moments.


Error in the answer. It shouldn't be there.

Ignore it, and you should end up with the values they have for P, NB and NA.
(edited 11 years ago)

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