Finding Weight: Homework Equations & Solutions

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SUMMARY

The discussion focuses on solving a physics homework problem involving forces and tension in cables. Key equations include the vector sum of forces, specifically 2T = W at point G and 3T = F(FD) at point F. Participants emphasize the importance of drawing free body diagrams to visualize the forces acting on each vertex. The use of trigonometric functions to resolve forces into components is also highlighted.

PREREQUISITES
  • Understanding of basic physics concepts, particularly forces and tension.
  • Knowledge of trigonometry, specifically sine functions for resolving angles.
  • Ability to draw and interpret free body diagrams.
  • Familiarity with vector addition and equilibrium conditions.
NEXT STEPS
  • Study the principles of static equilibrium in physics.
  • Learn how to effectively draw and analyze free body diagrams.
  • Explore the application of trigonometric functions in physics problems.
  • Investigate tension in cables and its calculations in various scenarios.
USEFUL FOR

Students studying physics, particularly those tackling problems involving forces and tension in static systems, as well as educators looking for practical examples to illustrate these concepts.

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Homework Statement


lq2R0wu.jpg


Homework Equations



Trig
Something around the lines of this?
ForceY=force(a-b)*sin(some angle) -orce(b-c)sin(some angle)+force(c-d)sin(some angle)

The Attempt at a Solution



Did what I did using paint. I think I am suppose to be doing something like this. Now I don't know where to go from here.

bqNH0gf.png
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Try drawing a free body diagram for each vertex.
Remember the vector sum of the forces has to be zero.

Start at point G - it has two cables with tension T holding it up and the weight W prulling down for 2T=W.

At point F - there is 3T down and some force F(FD) pointing up ... get the idea?
 

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