November 22, 2013

Straw vs Pencil



  1. Take a normal pencil and jab it into a potato with as much force as you can.
  2. What happens? It does not penetrate through to the other side
  3. Now try the straw. Jab the straw through the potato with the same force.
  4. It travels straight through and come out the other side.
  5. Why? Because the same amount of force is being applied to a much small area – the rim of the straw.
 

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