PASCO SE-8685 Pulley Demonstration System - Manual (Page 6)

Pulley Demonstration System
6 ®
B. Set up a Double Pulley on the Frame
a) Hang a single pulley to a hook
collar. b) Tie string to another hook
collar. c) Loop the string underneath
another single pulley. d) Attach a
mass hanger to the lower pulley's
lower hook. e) Loop the string up and
over the top pulley.
[Note: The free end is for pulling and
attaching measuring devices (i.e.
spring scale or Force Sensor) to
measure the force.]
C. Set up One or More Triple-Tandem Pulley(s) on the Frame
Set up for one triple-tandem
pulley: a) Place a hook collar on the
frame and adjust the top screw to
tighten. b) Hang the upper metal
hook of the triple-tandem pulley onto
the hook collar. c) Loop a separate
piece of string around each ring and
hook to a mass hanger. d) Add mass.
A variety of setups can be used,
depending upon your experiment.
Setup for two triple-tandems
together: a) Hang one triple-tandem
on the frame and hold a second triple-
tandem underneath. b) Loop the
string on the lower hook of the upper
pulley and continue to string in the
following direction and sequence: i) down and around the smallest ring on
the lower pulley, ii) up and around the smallest ring on the upper pulley, iii)
down and around the medium ring on the lower pulley, iv) up and around the
medium ring on the upper pulley, v) down and around the large ring on the
lower pulley, vi) up and around the large ring on the upper pulley, vii)
Attach a mass hanger to the string hanging from the upper pulley and add
mass. viii) Hook a mass hanger to the lower pulley and add weight to
balance.
Figure 3: Double Pulley
Figure 4a: One
Triple-Tandem
Pulley
Figure 4b: Two
Triple-Tandems