Owner's manual

3B SCIENTIFIC
®
PHYSICS
1
Free-Fall Tube 1000801
Instruction sheet
01/14 SF/ALF
1 Cock with hose nipple
2 Rubber stopper
3 Glass tube
4 Falling bodies
1. Safety instructions
Use caution when dealing with an evacuated
free-fall tube. There is a serious danger of
implosion in the event of shock or fall.
• Handle the glass tube with care. Danger of
breakage and possible injury.
• Do not expose the tube to any mechanical
stress.
2. Description
The free-fall tube is used to demonstrate that
all bodies in a vacuum have an equal gravita-
tional acceleration and require the same
amount of time to drop, given that there is no
air resistance or upthrust (replicating Newton's
guinea and feather experiment).
The apparatus consists of a glass tube with
two rubber stoppers and a cock with a hose
nipple which can be connected to a vacuum
pump.
Duck feathers and plastic parts serve as bod-
ies to demonstrate free fall.
3. Contents
1 Free fall tube
2 Rubber stoppers
1 Cock with hose nipple
Falling bodies (duck feathers, plastic parts)