PASCO PS-2120A Rotary Motion Sensor - Manual (Page 4)

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R o t a r y M o t i o n S e n s o r I n t r o d u c t i o n
4
Mounting the Rotary Motion Sensor to a Large “A” Base
The Rotary Motion Sensor can be mounted on the base of the Rotating
Platform (ME-8951) using the “A” Base Rotational Adapter (CI-6690,
available separately).
The “A” Base Rotational Adapter includes an adapter bracket, a
three-step pulley, a drive belt (“O” ring), and a shoulder screw.
See the PASCO web site at www.pasco.com for more information.
Mounting the Rotary Motion Sensor to a Gyroscope
Use the Gyroscope Mounting Bracket (ME-8963, available separately)
to mount the Rotary Motion Sensor to the Three-Axis Gyroscope
(ME-8960). Remove the gyroscope assembly from the vertical shaft of
the large “A” base. Mount the Gyroscope Mounting Bracket onto the
vertical shaft. Remove the rod clamp and the three-step pulley from the
Rotary Motion Sensor, and mount the sensor on the Gyroscope Mount-
ing Bracket with the thumbscrews included with the bracket. Mount
the slotted guide arm onto the shaft of the Rotary Motion Sensor.
Replace the gyroscope assembly on the vertical shaft.
See the PASCO web site at www.pasco.com for more information.
Attaching Accessories to the Rotary Motion Sensor
Attaching the Mini-Rotational Accessory to the Rotary Motion Sensor
To mount the rod of the Mini-Rotational Accessory to the Rotary Motion
Sensor, orient the 3-step Pulley so that the large diameter step is away
from the sensor case. The large diameter step has two pair of rod guides
opposite each other on the top edge. Align the rod with the rod guides
and use the captive screw in the center of the rod to attach the rod and
pulley onto the sensor’s shaft.
Attach the center of the rod to the 3-step Pulley and shaft and mount the
cylindrical masses at the ends of the rod to investigate the rotational iner-
tia (moment of inertia) of point masses.
Attach the end of the rod to the 3-step Pulley and shaft. Mount a cylindri-
cal mass on the rod to use the rod as a pendulum. Investigate the period
of oscillation of the pendulum when the amount of mass or the position
of the mass is changed. Investigate the period of oscillation as the amplitude of the swing is changed.
Adapter
Bracket
Rotary
Motion
Sensor
3-step
Pulley
3-step
Pulley
Shoulder
Screw
Rotating
Shaft Rotary
Motion
Sensor
Adapter
Bracket
Top View Bottom View
“O” Ring
3-step
Pulley
Gyroscope
Mounting
Bracket
Slotted
guide
arm
Mini-Rotational
Accessory Rod
Rod
guides
Cylindrical
mass
Shaft
Screw