Why Do Equal Torques Keep a Lever in Equilibrium?

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Equal torques maintain a lever in equilibrium by ensuring that the clockwise and counterclockwise torques balance each other out. The discussion emphasizes analyzing the forces and their distances from the pivot point to understand torque calculations. Participants suggest examining each force pair and the resulting torques to clarify the equilibrium condition. The conclusion drawn is that the magnitudes of the forces and their respective distances from the axis are crucial for achieving balance. Understanding these principles is essential for solving problems related to levers and torque.
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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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