A steel ball is falling through still air at constant (terminal) speed. The forces acting on the ball are upthrust, viscous drag and weight. In order of increasing magnitude, what are these three forces?
- Aupthrust $\rightarrow$ viscous drag $\rightarrow$ weight
- Bviscous drag $\rightarrow$ upthrust $\rightarrow$ weight
- Cviscous drag $\rightarrow$ weight $\rightarrow$ upthrust
- Dweight $\rightarrow$ upthrust $\rightarrow$ viscous drag