Finding weight with force and theta

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Homework Help Overview

The problem involves determining the weight (W) when a force of 26.0 N is directed along a leg, with a visual reference provided. The context appears to relate to forces in a system involving tension and angles.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • The original poster attempts to resolve the problem by drawing right triangles and using trigonometric functions, specifically sine, to calculate a component of the force. Other participants question the accuracy of this approach and suggest considering the tension in the strings and its components.

Discussion Status

The discussion is ongoing, with participants exploring different interpretations of the problem. Some guidance has been offered regarding the consideration of tension in the strings, but there is no explicit consensus on the correct approach yet.

Contextual Notes

There is mention of multiple strings and tensions, indicating a potentially complex system. The original poster's calculation has been challenged, suggesting a need for further clarification on the setup and assumptions regarding the forces involved.

k2var2002
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Homework Statement


What must W be when the force directed along the leg is 26.0N
http://session.masteringphysics.com/problemAsset/1012378/6/image5.42.jpg

Homework Equations


\SigmaF=ma=mg


The Attempt at a Solution


I used the two angles and drew the y-axis down from the top downward segment to form "two" right triangles. I considered downward on the y-axis to be positive. And finally combined the two angles(70) and took 26sin(70)= 24.4N

Any suggestions would be greatly appreciated.
 
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Your calculation is wrong.
Consider the tension in the two sections of the string be T, which is equal to mg. Resolve these tensions into two components along x and y-axis and proceed.
 
What are the two strings that I should account for with accompanied tension?
 
Since string is contentious, tension in all four sections is the same. Here you have to consider the tension in the section of string between two pulleys.
 

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