Determine the maximum stiffness k

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The rigid metal strip of negligible weight is used as
part of an electromagnetic switch. Determine the maximum
stiffness k of the springs at A and B so that the contact at C
closes when the vertical force developed there is F = 0.5 N.
Originally the strip is horizontal as shown.
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Good day bro, your videos are very good and explanatory. But I would actually like that you make videos teaching the topics on statics instead of just solving problems since you've a very deep knowledge of the course. I know I'm not the only one that feels like this and we'd really appreciate. Thanks bro

adelabuidris
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Engineering statics by RC hibbeler is a very good book you could follow to teach the course

adelabuidris
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You are amazing! Keep doing what you are doing you are really helping a lot of people understand this topic! Do you think you could explain how to do Statics and Dynamics by Hibbeler question 9-74. I feel like this a topic not touched on by quite a few and it would be a great help to understand how to do this.
cheers!

ethanmay
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Is it supposed to be
EFy = 0 = Fa + Fc - Fb instead of
EFy = 0 = Fa - Fc - Fb

nesrovlahsurvivalist
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Where do you get x=.01667 from??? If you set .025-.5x=0 and solve you get x=.5 So im

kaleybowers