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# question on vectors Watch

1. Force F1=(1,4,-3)kN acting at position R1=(1,1,1)m
Force F2=(2,1,3)kN acting at position R2=(2,1,3)m

find the magnitude of the resultant force in kN.
2. Add together F1 and F2 to get a vector giving the resultant force. Then take the magnitude of that.
3. (Original post by ttoby)
Add together F1 and F2 to get a vector giving the resultant force. Then take the magnitude of that.
so i don't need to worry about the position vectors for this question?
4. (Original post by plmqaz)
so i don't need to worry about the position vectors for this question?
Yeah if the question involved moments or something like that then the position of the forces would be important. But you're just taking the resultant which just involves adding the forces since they're already given as vectors.
5. (Original post by plmqaz)
so i don't need to worry about the position vectors for this question?
Yeah if the question involved moments or something like that then the position of the forces would be important. But you're just taking the resultant which just involves adding the forces since they're already given as vectors.
6. (Original post by ttoby)
Yeah if the question involved moments or something like that then the position of the forces would be important. But you're just taking the resultant which just involves adding the forces since they're already given as vectors.
thanks

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