- #1
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Homework Statement
I need to calculate the resultant force ##\vec{F}_R## for the following :
http://gyazo.com/5f2d7aad6aaed178135909480016e04a
I had another thread where I clarified a few things I hope will be good now.
Homework Equations
The Attempt at a Solution
So first I should get my components. There are three vectors to consider by the looks of the diagram.
##F_N = 8N + 17Ncos(45°)##
##F_S = 10N##
##F_W = 17Nsin(45°)##
Let ##F_V## denote the final vertical force. Note that I switch the direction of south to north as to add the vectors together :
##F_V = F_N - F_S = -2N + 17Ncos(45°) = 10.02N##
##∴\vec{F}_V = 10.02N [N]##
Thus ##F_R = \sqrt{(10.02N)^2 + (17Nsin(45°))^2} = 15.65N##.
To find the direction of ##F_R## consider :
##tan(θ) = \frac{10.02N}{17Nsin(45°)}##
##∴ θ = 39.81°##
##∴ \vec{F}_R = 15.65N [W 39.81° N]##
I hope all the arrows and the contexts are okay now.