Physics: Torque and static equilibrium

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SUMMARY

The discussion centers on the concepts of torque and static equilibrium in physics, specifically addressing the calculation errors made by a user named Frantelle. The user initially used an incorrect mass of 21kg instead of the accurate 21.5kg for the light in their calculations. Additionally, the conversation highlights the importance of analyzing the tension in the cable, questioning whether it has a vertical (y-direction) component. This indicates a need for a deeper understanding of vector components in static equilibrium scenarios.

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Frantelle
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I don't like writing formulas on the computer, so i just scanned my attempt.

http://c.imagehost.org/view/0630/q.jpg

In my working out, i incorrectly use the mass of 21kg for the light, it's actually 21.5kg...but either way my working out is still incorrect.

Thanks in advance, Frantelle.
 
Last edited by a moderator:
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Look closely at the diagram, does the tension in the cable actually have a component in the y-direction?
 

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