Asked by Adrienne
Two forces act on a point. One force is 35 newtons. The other is 22 newtons. The angle between the two forces is 52degrees. Find the magnitude of the resultant force in newtons.
Answers
Answered by
bobpursley
Law of sines:
R^2=22^2+35^2-2*22*35*cos52
R^2=22^2+35^2-2*22*35*cos52
Answered by
Steve
actually, if you draw the parallelogram, you will see that you have the wrong diagonal.
R^2=22^2+35^2-2*22*35*cos(180-52)
If the vectors are u and v, you want |u+v|, not |u-v|
R^2=22^2+35^2-2*22*35*cos(180-52)
If the vectors are u and v, you want |u+v|, not |u-v|
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