1. The problem statement, all variables and given/known data(adsbygoogle = window.adsbygoogle || []).push({});

A system of cables suspends a crate weighing W = 420 lb. The dimensions in the figure are as follows: h = 20.9 ft, l = 5.70 ft, x = 7.05 ft, theta = 36.0 , and phi = 20.0. Determine T_{A}, T_{D}, and T_{E}, the tensions in cable segments CA, CD, and CE, respectively.

2. Relevant equations

vector F = (magnitude F)(unit vector)

sum F = 0

F_{CA}+ F_{CB}+ F_{CD}+ F_{CE}+ F_{CF}+ W = 0

3. The attempt at a solution

How do I start by finding the coordinates:

C(0,0,0), D(x,0,h), A(?) E(?)

I can't see how to find the correct coordinates A,B,C,D,E,F

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# 3d force system please help

Can you offer guidance or do you also need help?

**Physics Forums | Science Articles, Homework Help, Discussion**