A hook is being used to raise a metal plate, as shown. To lift the metal plate about the pivot, as shown, an upward force of $100\,\text{N}$ is required. What is the weight $W$ of the metal plate?
- A$80\,\text{N}$
- B$100\,\text{N}$
- C$180\,\text{N}$
- D$225\,\text{N}$