Coin Tower Experiment
Kids of all ages will enjoy this fun science experiment which involves a challenge and a dash of magic. The Coin Tower Experiment will have young magicians and scientists overcoming friction and challenging Newton's first law of motion. This experiment will undoubtedly interest observers into trying it themselves. So, with only a few items that you are certain to have on hand at home, you and your family can learn all about inertia and friction in a hands on and exciting way.
How To Do It
The neat stack of coins desperately wants to stay in place and if you tried to move the bottom coin out from under the stack casually, the stack would tumble because there is so much friction on the coins. When you add the inertia of quickly swiping the knife, the force is much greater than the amount of friction present. So, instead of falling over, the stack falls exactly into place.