The diagram illustrates a man keeping a sack and barrow at rest. He exerts a vertical force on the handle. The centre of mass and the weight of the sack and barrow are indicated. The wheel functions as the pivot. What is the magnitude of the vertical force applied by the man?
- A$38\,\text{N}$
- B$50\,\text{N}$
- C$67\,\text{N}$
- D$200\,\text{N}$