PASCO CI-6538 Rotary Motion Sensor - Manual (Page 16)

®
Model No. CI-6538 Rotary Motion Sensor
15
c) Using the Chaos Accessory with the RMS
The Chaos Accessory is
a driven damped
physical pendulum.
Various types of phase
plots can be made as the
driving frequency,
driving amplitude,
initial conditions, and
amount of damping are
varied.
The adjustable magnet
attaches to either side of
the RMS (See Figure
14) The mass attaches to
the edge of the disk to form a physical pendulum.
A PASCO ME-8750 Mechanical Oscillator/Driver is also required to
drive the Chaos Accessory. The 1.2 m Dynamics Track is used as a
convenient way to mount and align all the components (See Figure
15). However, if a Dynamics Track is not available, components can
be mounted on a separate rod stand.
rod clamp
support rod
3-step Pulley
disk
magnet
RMS
magnetic damping
attachment
to interface
Figure 14: Rotary Motion Sensor with
Magnetic Damping Attachment
mass
RMS with
3-step pulley
magnetic damping
attachment
spring (2)
IDS Mount
Accessory
Adjustable
End-Stop
string
string
disk
(phantom view)
rod clamp
Mechanical
Oscillator/Driver
Figure 15: Chaos Accessory with Mechanical Oscillator
on a Dynamics Track
Note: The sample rate
should be as fast as pos-
sible. If the sample rate
is too fast, lines in the
graph become chunky.