Tension of 10 m rope hung across 6 m horizontal distance with 50 kg box hanging

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Discussion Overview

The discussion revolves around a physics homework problem involving a rope of 10 m length hung across a horizontal distance of 6 m, with a 50 kg mass attached at a point 4 m from one end. Participants explore the calculation of tension in the rope segments and the forces acting on the system.

Discussion Character

  • Homework-related
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant calculates the weight of the hanging mass using W = 50.0 kg * 9.81 m/s² but expresses confusion about the next steps due to a lack of angles or additional forces provided.
  • Another participant emphasizes the necessity of balancing forces and maintaining the total length of the rope at 10 m between points A and B.
  • A participant acknowledges their misunderstanding of the problem's setup, initially interpreting the 4 m as a horizontal distance rather than the length of one segment of the rope, suggesting that visual aids would help clarify such problems.

Areas of Agreement / Disagreement

Participants generally agree on the need to balance forces and the importance of the rope's total length, but there is no consensus on the correct approach to solving the problem, as participants express different interpretations and levels of understanding.

Contextual Notes

Some assumptions about the geometry of the problem and the distribution of forces remain unresolved, particularly regarding the angles and lengths of the rope segments.

TRed503
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Homework Statement


A rope is 10.0 m long and is attached at points A and B, which are at the same elevation 6.0 m apart. If a 50.0 kg mass is attached to the rope 4.0 m away from point A, what is the tension in the two segments of the rope?

Homework Equations


W = ma
ƩFy = 0 = T1 + T2 - W
ƩFx = 0 = T1 + T2

The Attempt at a Solution


W = 50.0 kg * 9.81 m/s^2
I'm stuck after finding the weight of the hanging mass as no other angles or forces are given? I tried using 6.667 m and 3.333 m as the respective lengths for T1 and T2 assuming that the ratio of 2/3 distance of the hanging mass between point A and B would be the same ratio on the rope length. Then tried to use trig to get the vertical hanging distance but came up with 2 different distances so these numbers don't work. I'm lost and stuck as to were to go. Any help is much appreciated as this homework assignment is already late and I've spent about 5 hours reading and looking up stuff online with no success! Feel as though I'm trying to extract blood from a rock!
 
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Not only must your forces balance, you must also have 10 m of rope between A, the load, and B.
 
Yes that is correct. Not sure if that was a statement or a question, but I'm past that part, drew my diagram and am stuck trying to suck Newtons out of meters and no angles somehow?
 
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I think I figured it out... I was interpreting the problem to mean that the mass is 4 m horizontal distance from point A, but I think that the 4 m was supposed to be the length of T1 or the hypotenuse for my right triangle! If only story problems came with pictures! Thanks for you're reply SteamKing I'll be back if I hit another wall but I should be good for this problem now.
 

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