The diagram illustrates a uniform metre rule in equilibrium about its centre point. What is the weight $W$ positioned at the $20\,\text{cm}$ mark?
- A$0.25\,\text{N}$
- B$4.0\,\text{N}$
- C$9.0\,\text{N}$
- D$21\,\text{N}$
Physics 0625 · IGCSE · Forces
Physics 0625 · IGCSE · Forces
The diagram illustrates a uniform metre rule in equilibrium about its centre point. What is the weight $W$ positioned at the $20\,\text{cm}$ mark?