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

http://i241.photobucket.com/albums/ff4/alg5045/image546.jpg

Find the tension in each cord in the figure if the weight of the suspended object is 250N.

Part A) Find the tension in the cord A for system (a)

Part B) Find the tension in the cord B for system (a)

Part C) Find the tension in the cord C for system (a)

Part D) Find the tension in the cord A for system (b)

Part E) Find the tension in the cord B for system (b)

Part F) Find the tension in the cord B for system (b)

2. Relevant equations

F=ma

3. The attempt at a solution

I found the tension in both Cs by drawing a free body diagram and setting F=mg = 250N for both.

I've also found the tension in cord A for system b. Since there are two unknowns, I solved the horizontal equation Ax=Bx for B, and then I substituted B into the vertical equation. So the end equation would be A(sin210sin45-cos210sin45) = 250cos45. I got A = 685N.

Then I tried substituting A into the Asin(thetaA) = Bcos(thetaB). I got B = 484N, which was wrong.

I've also tried using the same principle to find the tensions in A and B for system a, but I can't get it.

**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!

# Homework Help: Finding tension in each cord

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