Wat are the steps in using a feather and a hammer in a scientific experiment to prove that gravity has mass

Prepare hammer & feather, ladder or something to drop your objects from like a balcony. Climb the ladder & prepare to drop hammer & feather from the same height
Updated on Monday, February 06 2012 at 03:46PM EST
Source: www.csiro.au/...
Collections: scientific experimentfeatherbalconyladderhammer