3B Scientific Free Fall Tube User Manual

3b scientific® physics

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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)

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