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

in the given figure, vectors u and v each have a magnitude of 55 pounds. Find the magnitude and direction of the force w needed to counterbalance u and v? So the "figure" is pretty simple... it shows a line labled North and south and vector u is pointing 45 degrees in the south west direction and vector v is pointing 60 degrees in the south east direction.

2. Relevant equations

trig functions

3. The attempt at a solution

this is a calc3 class using the varberg 9e text book and the class uses an online program called math lab which is provided by the text book and therefore all the online material directly relates to the text... So im on chapter 11 dealing with vectors... Specifically 3D vectors... however this appears to be a 2D problem... i missed a problem similar to this on my online quiz... so i went to the online practice problems and found this problem... and i clicked the "help me solve this" button which takes you step by step to the solution... At this point i could see where i made mistakes in solving the quiz problem, but i dont understand why i was wrong so my first question is... They come up with 67 pounds and so did i but they claim its at 277.5 degrees? or S7.5 degrees E? Why? wouldnt it be in the north east direction?

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

**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: 2 vectors what third vector is needed to counter bakance the first 2?

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