This apparatus demonstrates that bodies of different density or mass fall
through a given distance in the same time in the absence of atmospheric drag.
a) Glass tube 600 x 20 mm,
fitted with
two solid rubber bungs, one carrying 8 mm dia rubber tube with clip for vacuum connection. b) Same
but Glass tube 600 x
50mm dia c) Same as (a) but with stopcock and can be fitted directly on pump plate
