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in Laws of motion by (48.4k points)

The force F = 800i + 200j (N) acts at point A where the cables AB, AC, and AD are joined. What are the tensions in the three cables?

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Best answer

We first write the position vectors

Now we can use these vectors to define the force vectors

The equilibrium equations are then

Solving, we find TAB = 405 N, TAC = 395 N, TAD = 103 N.

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