| A2-6 | Free fall - tall ladder and balls. |
| Purpose: | To show Galileo's leaning tower of Pisa demo. |
| Description: | Stand at a high place such as at the top of a long ladder and let go at the same time balls with same size but different weights (Iron, wood, rubber and styrofoam balls) |
| References: | |
| Equipment: | Long ladder and balls with different weights. |