In unit-vector notation, what is the net torque about the origin on a flea located at coordinates (-2.0, 1.0 m, 1.0 m) when forces f1 = (1.0 n) k and f2 = (-2.0 n) j act on the flea?

Torque,

Explanation:

Given that,

Position of the flea,

Force acting on the flea,

We need to find the net torque about the origin on a flea located at coordinates. Its formula is given by :

On solving the cross product of r and F, we get :

So, the net torque about the origin on a flea is . Hence, this is the required solution.