Clues to look for: logic and physical laws of everyday life

Problem: Where to start when everything seems to be happening at once?

Solution:  Prioritize the forces at play .

1. Gravity: The rock E pushes will go downward, not sideways.
2. Alignment: Does it follow a path that brushes against D, or does it touch it?
3. The plank: if a weight falls on one end, the other goes down.
4. 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?:

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