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eco's physics help

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There is certainly a way to calculate this using tension, but I would do it using energies (but since I'm taking physics for the first time since highschool, please double check it.. I'm almost sure this is right, but not 100% sure)

 

Parts b and c specifically ask you for the tension, so that's fine for part a, but you have to break down the forces for the rest of the problem.

Parts b and c specifically ask you for the tension, so that's fine for part a, but you have to break down the forces for the rest of the problem.

Yeah I was only looking at part A. I was right with using energies, though, right?

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