V-3 Statics and Finding the Missing Force (see note below)

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FINAL VALUE FOR MAGNITUDE OF F3 SHOULD BE 175 N, not 1554 N (WHICH MAKES NO SENSE). Sorry!
  1. MrDGenova
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I dont know if you've just encounter errors when solving for magnitude of f3. Coz it was ~175N.
Ps - one of the good explanatiom out there.

shitrecogniseshit
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Holy shit dude, you just helped me solve this problem I've been stuck on for 5 hours now. I've watched at least 8 videos to no help, and this one helps me the most.

Thank you!

BlueSharkRides
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Well explained prof !! Better than 2 hour lecture of the lecturer in my college

ArifWaqasofficial
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How did you get the 1554 N using Pythagorean theorem. I got 175 N

joanamarieviernes
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thank you very much for this, very helpful, i loved the mistake, thank you for adding correction other wise i would of gone crazy calculating where i went wrong

Craig.Coates
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Hello, this would work if I had four vectors with one missing force right? I would just add F1+F2+F3 together in order to solve for F4

OH. Wait probably not because of the Pythagorean theorem....

cynthiaefuentes
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How would you do it with no forces given just the resultant force was given

doubletroublegaming