A metre rule of uniform construction, with a weight of $2.0\,\text{N}$, is balanced on a pivot at the $60\,\text{cm}$ mark. A $4.0\,\text{N}$ load is hung from one end, so that the rule turns around the pivot. When the rule is in the horizontal position, what is the total turning moment about the pivot?
- Azero
- B$1.4\,\text{N m}$
- C$1.6\,\text{N m}$
- D$1.8\,\text{N m}$