Can you find tension on a string without mass

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    Mass String Tension
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Discussion Overview

The discussion revolves around a pulley system involving three masses, where two masses are hanging and one is on a table. Participants explore the concept of tension in the string connecting the masses, particularly in the context of mechanical equilibrium and free body diagrams. The discussion includes theoretical considerations and the application of concepts from mechanics.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant describes a pulley system with three masses, noting that one mass is twice the mass of another hanging mass.
  • Another participant questions whether the weights are in mechanical equilibrium and suggests using free body diagrams for clarity.
  • A later reply confirms that the weights are indeed in mechanical equilibrium and mentions that a free body diagram was provided.
  • Another participant asks about the forces acting on each mass and the implications of setting the sum of the forces to zero.

Areas of Agreement / Disagreement

Participants generally agree that the system is in mechanical equilibrium, but there is no consensus on the specific forces acting on each mass or the implications for tension in the string.

Contextual Notes

Limitations include the lack of specific mass values for the objects and the dependence on the assumptions made in the free body diagrams. The discussion does not resolve the mathematical steps needed to find the tension.

faisalcrazy
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So my pulley system has 3 masses two of which are connected to a center mass on top of a table. No mass was given for any of the objects but of two masses hanging from the table, the one on the right is 2 times the mass on the left. I hope I haven't confused you but its like a three step diagram so I'm going to try make a picture for you

M2(free weight)-----^M1(on table)------M3(free weight,X2 the mass)
 
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Are the weights supposed to be in mechanical equilibrium? I recommend drawing a free body diagram for each mass.
 
Geofleur said:
Are the weights supposed to be in mechanical equilibrium? I recommend drawing a free body diagram for each mass.

Yes they are and I have! it was also given with a free body diagram that's why I tried to draw it out for you
 
What forces do you get acting on each mass? What happens when you set the sum of the forces on each mass to zero?
 

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