This science trick is so simple, but so much fun. It’s also easy for students to replicate at home.
-Two empty 375ml cans
-Approx 100ml of water
-Secretly pour about 100mls of water into one can.
-Have a student try to balance the other empty can tilted on its bottom rim. It is impossible.
-Then amaze them, by easily balancing your ‘magic’ can on its bottom rim (they don’t need to know it has water in it).
It works because the water adds weight to the bottom of the can, changing its centre of gravity and allowing it to balance in otherwise impossible ways.