Tension is horizontal rope tied to hooks at each end

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Homework Help Overview

The problem involves a horizontal rope tied between two walls with a weight suspended in the middle, creating a sag. The subject area pertains to tension in ropes and forces in equilibrium.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to calculate the tension in the rope using trigonometric relationships based on the sag and weight. Some participants question the initial calculation and suggest that the vertical component of tension should be half of the weight. Others explore the implications of this on the horizontal forces at the hooks.

Discussion Status

The discussion is ongoing, with participants providing feedback on the calculations and exploring the relationships between the forces involved. There is a recognition of differing interpretations regarding the tension and forces on the hooks.

Contextual Notes

Participants are working within the constraints of the problem statement, including the specific distances and weights provided. There is an emphasis on ensuring the calculations align with the physical setup described.

Jwill
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Want to make sure I'm doing this right... it seems too easy

Homework Statement


A horizontal rope is tightly tied to hooks between two walls separated by a distance of 5m. A 100N weight is suspended from the middle of the rope and it sags so that the middle of the rope is displaced a distance of 0.25m.

a. What is the tension in the rope?
b. What are the horizontal and vertical forces exerted on the hooks.


Homework Equations





The Attempt at a Solution


I found the angle using arcTan(.25/2.5) = 5.7106 degrees. Then did 100N/tan(5.7106)=1000Ni and used sqrt(100N^2 + 1000N^2)= 1004.988N to find the rope's tension...
 
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The tension is half that... the vertical component of tension on either side of the weight has to be 50N.
 
okay, thanks, i was thinking that might be the case
 
So that would also make the horizontal forces on each hook 500N right?
 
Jwill said:
So that would also make the horizontal forces on each hook 500N right?

yes.
 

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