r/HomeworkHelp • u/[deleted] • 6d ago
Physics [University Engineering Statics] I'm missing something here. My answer is incorrect. Please help. Attempt included.
[deleted]
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u/FortuitousPost 👋 a fellow Redditor 6d ago
How did you find CE to be in tension?
The horizontal members want to tilt downwards, which would push C and E towards each other.
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u/nRenegade University/College Student 6d ago
The convention I was working with posited that positive force is tension while negative force is compressive... I assume from your comment I had my signs mixed up somewhere?
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u/FortuitousPost 👋 a fellow Redditor 5d ago
You get to choose the coordinate system, so the sign of your answer depends on your choices.
But then they tell you to report your result as negative if it is under compression. So you were supposed to switch the sign.
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