Why Do Equal Torques Keep a Lever in Equilibrium?

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SUMMARY

The discussion centers on the concept of equilibrium in levers, specifically addressing how equal torques maintain a lever in balance. Participants confirm that the answer to the problem presented is 3 and 4, emphasizing the importance of analyzing the pairs of forces and their respective distances from the pivot point. The key takeaway is that torque is calculated as the product of force magnitude and distance from the axis, which is crucial for understanding lever mechanics.

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  • Understanding of basic physics concepts, particularly torque and equilibrium.
  • Familiarity with force vectors and their magnitudes.
  • Knowledge of lever mechanics and pivot points.
  • Ability to interpret diagrams related to physics problems.
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  • Study the principles of torque calculation in detail.
  • Learn about the conditions for static equilibrium in physics.
  • Explore real-world applications of levers and torque in engineering.
  • Investigate the role of distance from the pivot in determining torque effectiveness.
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Students of physics, educators teaching mechanics, and anyone interested in understanding the principles of levers and torque in equilibrium scenarios.

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http://img208.imageshack.us/img208/392/untitledsx2.png

this one seems so simple...i know the answer is 3 and 4; however, I do not know how my book came to that conclusion. can anyone explain to me exactly what is going on in the above diagram? Thanks
 
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mikefitz said:
this one seems so simple...i know the answer is 3 and 4; however, I do not know how my book came to that conclusion. can anyone explain to me exactly what is going on in the above diagram? Thanks

Look at each pair of forces and at the pair of torques it would produce. Focus on the magnitudes of the force vectors and on their distance from the axis.
 

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