vectors-m

Question: A force $\mathbf{F}=2\mathbf{i}+\mathbf{j}-\mathbf{k}$ acts at a point A, whose position vector is $2\mathbf{i}-\mathbf{j}$. The moment of F about the origin is

1) $\mathbf{i}+2\mathbf{j}-4\mathbf{k}$

2) $\mathbf{i}-2\mathbf{j}-4\mathbf{k}$

3) $\mathbf{i}+2\mathbf{j}+4\mathbf{k}$

4) $\mathbf{i}-2\mathbf{j}+4\mathbf{k}$

Solution:

Explanation: No Explanation

Vector Product Cross Product of two vectors

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