A body is acted on by two forces. Find the magnitude and direction of the resultant force by using the mathematical method. I’m not sure if I’ve done this correctly, any pointers would be appreciated 🙂
Also what is the angle between the two vectors? Is it 90 or 76 degrees?
Not sure how to describe this in words so I have the image for the diagram.
2. Relevant equations
3. The attempt at a solution
Working out the first triangle.
x=cos45 x 90 = 63.64
Working out the second triangle.
x=cos45 x 10 = 7.07
So for the system
x=63.64 + 7.07= 70.71
y= 63.64-7.07= 56.57
√70.71^2+56.57^2 = 90.554 N
Tanθ = opp/adj
Tan-1 1.25 = 51.34° above the horizontal.