- #1
barroncutter
- 5
- 0
Homework Statement
This question is just for b)
"Calculate the force acting on the object indicated in the diagram."
Homework Equations
√ F12 + F22 = net force
c2 = a2 + b2 -2ab cos A[/B]
The Attempt at a Solution
[/B]
So I first started by using a technique my friend taught me to find the force when there isn't an angle greater than 90 degrees. So I split the question into two parts. The upper part with the 45 degree angle, and the net force where the larger angle was.
First Net Force
√ F12 + F22 = net force (north, west)
F1 = 8 + 17Ncos45° = 20.02
F2 = 17Ncos45° = 12.02
√ 545.28 = 23.4 N
Second Net Force
Angle between x-axis & 17N: 90° - 45° = 45°
This angle will always give you the angle you need to solve c2C2 = 102 + 172 – 2(10)(17)cos45° = 33.6 N
Now I'm assuming I need to add both of these together? I'm also a little confused on how I'm going to find the angle of them. Because how do I add both net forces and their angles? A little confused by this.
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