The diagram depicts a uniform metre rule with its pivot at the $30\,\text{cm}$ mark. The rule is in equilibrium when a weight of $6.0\,\text{N}$ is suspended from the zero mark and a weight of $2.0\,\text{N}$ is suspended from the $70\,\text{cm}$ mark. What is the weight of the rule?
- A$2.0\,\text{N}$
- B$5.0\,\text{N}$
- C$6.0\,\text{N}$
- D$13.0\,\text{N}$