Problem: Where to start when everything seems to be happening at once?
Solution: Prioritize the forces at play .
Gravity: The rock E pushes will go downward, not sideways.
Alignment: Does it follow a path that brushes against D, or does it touch it?
The plank: if a weight falls on one end, the other goes down.
The second rock: if it’s lifted, can it roll elsewhere?
Think of it like a recipe : pour, press, tip… and the rest becomes logical.
Step-by-step reasoning: who is in danger first?:
Continued on next page
