phoenix159
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- 2014
Prelim Physics Vector Addition Question (1 Viewer)
- Thread starter phoenix159
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Fizzy_Cyst
Owner @ Sigma Science + Phys Goat
Do you go to a school in Parramatta? A couple of my tutoring students were trying to explain a similar question to me, but couldn't quite explain it clearly!
Are we to assume that everything is in equilibrium? (I.e., F3 not the resultant, but equal in magnitude to the resultant, but in opposite direction and thus forms a closed-loop vector)
Shift F2 to the tip of F1, so you can then add them together and work out the resultant using the Cosine rule. F3 will then just be the magnitude of the resultant, but in opposite direction.
If angle between them at that point is 59, then the angle between them when you place F2 on tip of F1 will be 121 as they are supplementary angles.
F3 comes out to be 131.4N
Are we to assume that everything is in equilibrium? (I.e., F3 not the resultant, but equal in magnitude to the resultant, but in opposite direction and thus forms a closed-loop vector)
Shift F2 to the tip of F1, so you can then add them together and work out the resultant using the Cosine rule. F3 will then just be the magnitude of the resultant, but in opposite direction.
If angle between them at that point is 59, then the angle between them when you place F2 on tip of F1 will be 121 as they are supplementary angles.
F3 comes out to be 131.4N
