The diagram represents a basic model of a car’s braking system. A force of $20\,\text{N}$ is applied to piston P. This produces a force $F$ on piston Q. Piston P has an area of $5.0\,\text{cm}^2$ and piston Q has an area of $25\,\text{cm}^2$. What is the force $F$?
- A$4.0\,\text{N}$
- B$20\,\text{N}$
- C$100\,\text{N}$
- D$500\,\text{N}$