Pulley and tensions in string segments

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In a scenario with a massless string and a massive pulley, the tension in the string segments can vary depending on the system's dynamics. If the weights are stationary and equal, the tensions are typically the same due to symmetry. However, if the system involves moving masses or friction at the pulley, the tensions may differ. The book's mention of varying tensions likely considers these factors. Understanding the role of friction and motion is crucial in analyzing the tension in such systems.
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Homework Statement


Here is a picture:
http://img233.imageshack.us/img233/2509/pulleywl8.png

If both the hanged weights be the same, what would be tensions in the two segments of the strings if the string is massless, but the pulley has a large mass.

I think it would be the same and independent of the mass of the pulley (in equilibrium position). But my book mentions it otherwise! Why??
 
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ritwik06 said:
If both the hanged weights be the same, what would be tensions in the two segments of the strings if the string is massless, but the pulley has a large mass.

I think it would be the same and independent of the mass of the pulley (in equilibrium position). But my book mentions it otherwise! Why??

Hi ritwik06! :smile:

If the masses are stationary, then from symmetry the tensions must be the same.

Are the masses moving? Is there friction between the rope and the pulley, or between the pulley and its own axle?

Can you show us more of what the book says?
 

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