Ball bearings from 75cm

In this experiment you will see that different sized metal balls falling from the same height will take exactly the same time to reach the sand. The equipment you will need for this experiment includes:

  • Bowl with sand
  • Ruler
  • Different size metal balls
     

Method and observation:

  • Drop the smaller ball in the sand, then remove the ball and smooth down the sand
  • Drop the second ball in the sand, then remove the ball and smooth down the sand
  • Drop the third ball in the sand, then remove the ball and smooth down the sand
  • Drop the fourth ball in the sand, then remove ball and smooth down the sand
  • Drop the fifth ball in the sand, then remove the ball and smooth down the sand
  • You will see that all the balls dropped at the same speed in the sand