Determine the greatest mass of the crate that can be supported

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If the maximum force in each rod can not exceed
1500 N, determine the greatest mass of the crate that can be
supported.
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How is the i-component of the B vector +1? On the diagram, it is clearly 1 meter on the negative side of the x axis. Also, the magnitude of A that you got is not what I'm getting on my calculator (3.74).

johnnysake
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Pretty sure point B is (-1, -2, 2) and not +1

Cergun_
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Be warned: He makes multiple errors and his final answer is incorrect.

jedwards
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Why √(2^2+(-3)^2+1^2) is 3.61😅 isn't it 3.74?

Function_range
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Thanks for your videos. I'm still trying to figure out how did you get -0.169 as your determinant? I'm getting 0.0589 instead

chesterventura
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The process he goes through is correct, however, he does make multiple errors in the beginning such as the location of point B, and solving for the unit vectors.

nathanmcintire
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Yeah that i-component screws things up, I got 88.49 kg.

Slayden
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how in the hell did you turn that into a matrices?

ncape
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cbafaculty chapter 3 has the problem solved correctly on page 62

Alex_and_Gabes_Bad_Ideas
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Oh god no one in the video or comment section knows how to solve this... I'm ducked

derekprice