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# Mechanics vectors watch

1. A force F = 10i + 3j - 2k N goes through a point whose position vector R = 6i - 2j m. Find an equivalent system such that the force goes through the point R1 = 2j + 3k m.

The answer is given as the original F, plus M = 13i - 22j + 32k Nm.

I got M = -13i + 22j - 32k

Cant quite remember from my A-level what this means?

Thanks.
2. (Original post by Crucio404)
A force F = 10i + 3j - 2k N goes through a point whose position vector R = 6i - 2j m. Find an equivalent system such that the force goes through the point R1 = 2j + 3k m.

The answer is given as the original F, plus M = 13i - 22j + 32k Nm.

I got M = -13i + 22j - 32k

Cant quite remember from my A-level what this means?

Thanks.
Since force is a vector quantity and your M is the minus of their M, then "no", both answers are not correct. I would suspect something in the wording of the question, since you're answer is the negative of theirs; but I'm just guessing there.

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