PASCO ME-8952 User Manual
Instruction Sheet
for the PASCO
Model ME-8952
Centripetal Force Accessory
clamp-on
pulley
012-05294B
10/94
$1.00
side post
50g masses
plastic
indicator disk
spring
Introduction
The ME-8952 Centripetal Force Accessory is comprised
of two vertical posts which can be mounted to the
Rotating Platform with thumbscrews. These posts are
adjustable and can be positioned virtually anywhere along
the length of the platform. The radius indicator is at the
center of the apparatus so it can be clearly seen while the
apparatus is rotating. The PASCO Centripetal Force
Accessory can be used to experiment with centripetal
force and conservation of angular momentum. For the
centripetal force experiments it is possible to vary the
mass and radius to see the resulting change in the centripetal force. The force can also be held constant while other
quantities are varied. The Centripetal Force Accessory is
powered by hand and the rate of rotation can be counted
manually or read by a computer. Variable hanging masses
are included. This accessory requires the Rotating
Platform (ME-8951) to operate.
center post
rivet
100g mass with 3
open hooks
Equipment
The ME-8952 Centripetal Force Accessory includes:
- center post that supports an indicator mechanism
which consists of a small pulley, a movable
spring holder, a movable indicator, a rivet, a
spring, and a plastic indicator disk
- side post for hanging hooked mass
- mass (100 g) with 3 open hooks
- 2 additional 50 gram masses
- clamp-on pulley
See the Complete Rotational Manual for experiment
guide.
10101 Foothills Blvd. • P.O. Box 619011 • Roseville, CA 95678-9011 USA
Phone (916) 786-3800 • FAX (916) 786-8905 • TWX 910-383-2040
© 1994 PASCO scientific
This instruction sheet written by: Ann and Jon Hanks and
edited by: Eric Ayars
better
ways to
teach physics
Centripetal Force Accessory 012-05294B
rivet
Center Post Assembly
Assemble the center post as shown in Figure 1:
➀ Drop the rivet through the hole in the top of the spring
bracket. Connect one end of the spring to the hole in
the end of the rivet. Connect the plastic indicator disk
to the other end of the spring.
➁ Tie one end of a string (about 30 cm long) to the bot-
tom of the plastic indicator disk and tie a loop in the
other end of the string.
➂ Insert the indicator bracket into the slot on the center
post, placing it below the spring bracket. Tighten the
thumb screw.
spring
bracket
spring
pulley
center post
plastic
indicator
disk
indicator
bracket
➃ Attach the pulley in the higher of the two holes on the
center bracket.
➄ Insert the thumbscrew at the bottom of the center post
and attach the square nut.
Side Post Assembly
Assemble the side post as shown in Figure 2:
➀ Insert the thumb screw at the bottom of the side post
and attach the square nut.
➁ Using a string about 30 cm long, tie the string around
the screw head on the top of the side post. Then thread
the other end of the string down through one of the
holes in the top of the side post and then back up
through the other hole. Do not pull the string taut.
reference mark
(center of post)
square nut
Figure 1: Center Post Assembly
holes for
thread
single length of
thread (30cm long)
thumbscrew
nylon
thumbscrew
side post
➂ Loosen the screw on the top of the side post and wrap
the loose end of the string around the threads of the
screw and tighten the screw.
thumbscrew
100g mass
square nut
Figure 2: Side Post Assembly
2
Loading...