PASCO ME-8952 Centripetal Force Accessory - Manual (Page 2)

Centripetal Force Accessory 012-05294B
2
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.
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.
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.
square nut
nylon
thumbscrew
holes for
thread
100g mass
thumbscrew
single length of
thread (30cm long)
side post
Figure 2: Side Post Assembly
plastic
indicator
disk
indicator
bracket
thumbscrew
reference mark
(center of post)
spring
spring
bracket
pulley
square nut
Figure 1: Center Post Assembly
rivet
center post