일반물리학 1 — Rolling, Torque, and Angular Momentum: Problem 21

21 In unit vector notation, what is the torque about the origin on a particle located at coordinates (0, -4.0 m, 3.0 m) if that torque is due to (a) force \(\vec{F}_1\) with components \(F_{1x} = 2.0 \text{ N}\), \(F_{1y} = F_{1z} = 0\), and (b) force \(\vec{F}_2\) with components \(F_{2x} = 0\), \(F_{2y} = 2.0 \text{ N}\), \(F_{2z} = 4.0 \text{ N}\)?