Concurent and Parallel Forces 2

[kgbwolf]

Four forces each of magnitude 2750lb act at the same point. The angle between adjacent forces is 30degrees. find the resultant force. I worked it out and got FR= 0 in the x and 0 in the y is that right??

 

[vaishakh]

Let's take F1 as X-direction. Then F2 makes 30deg with it and similarly F3 makes 60deg while F4 makes 90 deg or denotes the Y-direction.
Now add the vectors properly - 2750x + 1375*root3x + 1375y + 1375x + 1375*root3y + 2750y. This isn't anyway 0. Why did you get them wrong?

 

[kgbwolf]

i see what ur saying thanks