Chapter 10, Problem 10.6E

A metal bar is in the xy-plane with one end of the bar at the origin. A force $\stackrel{\to }{F}=(7.00\text{N})\hat{i}+(-3.00\text{N})\hat{j}$ is applied to the bar at the point x = 3.00 m, y = 4.00 m. (a) In terms of unit vectors $\hat{i}$ and $\hat{j}$, what is the position vector $\stackrel{\to }{r}$ for the point where the force is applied? (b) What are the magnitude and direction of the torque with respect to the origin produced by $\stackrel{\to }{F}$?