Question

Forces $2\hat{i}+7\hat{j},2\hat{i}-5\hat{j}+6\hat{k},-\hat{i}+2\hat{j}-\hat{k}$ act at a point $P$ whose position vector is $4\hat{i}-3\hat{j}-2\hat{k}$. Find the vector moment of the resultant of three forces acting at $P$ about the point $Q$, whose position vector is $6\hat{i}+\hat{j}-3\hat{k}$

• A. $24\hat{i}+13\hat{j}+4\hat{k}$
• B. $-24\hat{i}-13\hat{j}+4\hat{k}$
• C. $-24\hat{i}+13\hat{j}+4\hat{k}$
• D. $-24\hat{i}-13\hat{j}-4\hat{k}$

Answer 1

The correct option is C $-24\hat{i}+13\hat{j}+4\hat{k}$