A metre rule of uniform composition is in equilibrium under a $4.0\,\text{N}$ weight, as illustrated. What is 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
A metre rule of uniform composition is in equilibrium under a $4.0\,\text{N}$ weight, as illustrated. What is the weight $W$ of the metre rule?