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In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles shown in the picture. The tire remains stationary in spite of the three pulls. Alex pulls with force of magnitude 207 N, and Charles pulls with force of magnitude 188 N. Note that the direction of is not given. What is the magnitude of Betty's force if Charles pulls in (a) the direction drawn in the picture or (b) the other possible direction for equilibrium?

I already found the correct answer for a to be 291 N, but I am having trouble finding b.

If you copy and paste this question, the exact same diagram is shown in the problem but with the angle 140 degrees.

  • no picture -

    If you copied and pasted a figure, that does not work here.

  • Physics -

    I did not copy and paste. I simply stated to copy and paste into the Google search bar this question and there are many results with this similar question. Just copy and paste this question and click the first link tha appears (I cannot type the url)and there are three problems on the page and the image to this problem is on the bottom. I apologize if my statement about the diagram was not clear.

  • Physics -

    It does not state how to get b and I have been looking through my book and other textbooks and online but cannot find how.

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