The metre rule shown is in equilibrium when a $4.0\text{ N}$ weight is used. Determine the weight $W$ of the metre rule.
- A$1.0\text{ N}$
- B$4.0\text{ N}$
- C$16\text{ N}$
- D$40\text{ N}$
Physics 5054 · O Level · Turning effect of forces
The metre rule shown is in equilibrium when a $4.0\text{ N}$ weight is used. Determine the weight $W$ of the metre rule.