- #1
starfish101
- 3
- 0
Homework Statement
I have been given two forces and have to calculate the magnitude and direction of the third force that will result in equilibrium. The two forces I have been given are:
F1 = 2.156N at 48 degrees
F2 = 4.508N at 203 degrees
Homework Equations
I used both the cosine law (c^2 = a^2 + b^2 -2abcosC) and the sine law (sin A/a = sin C/c) to solve the problem.
The Attempt at a Solution
I started by drawing out the triangle with all the forces and angles. I then used the equation c^2 = a^2 + b^2 -2abcosC and got an answer of 2.7117N. Next, I used the sine law to find that the angle is 19.634 degrees. I think I have to calculate theta next, but I am really confused on how to do that. I am not completely sure that I have drawn my triangle correctly either. Any help would be much appreciated. Thanks in advance.