PASCO SE-8685 User Manual
Instruction Manual
Manual No. 012-08546A
Pulley Demonstration
System
Model No. SE-8685
Pulley Demonstration System Model No. SE-8685
Table of Contents
Equipment List........................................................... 3
Introduction ............................................................. 4
Equipment Setup ........................................................ 5
I. Assembling the Frame................................................................................................................5
II. Sample Setup Options (Hanging Pulleys on the Frame)...........................................................5
A. Set up a Single Pulley on the Frame..................................................................................... 5
B. Set up a Double Pulley on the Frame....................................................................................6
C. Set up One or More Triple-Tandem Pulley(s) on the Frame ................................................6
D. Set up One or More Quadruple Pulley(s) on the Frame........................................................7
E. Set up a Four-Step Pulley on the Frame................................................................................7
Suggested Experiments ................................................. 8
Experiment 1: Mechanical and Force Differences between a Single and Double Pulley..............8
Experiment 2: Determining the Work/Energy of a Pulley System..............................................10
Experiment 3: Discovering the Mechanics of a Wheel and Axle (4-Step Pulley).......................11
Sample Data/Results................................................... 12
Appendix A: Specifications............................................ 13
Appendix B: Technical Support ....................................... 14
Appendix C: Copyright and Warranty Information .................. 14
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®
Model No. SE-8685 Pulley Demonstration System
Pulley Demonstration System
Model No. SE-8685
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Included Equipment
1. Base, 20 cm x 81 cm (1) 11. Slotted mass, 500 grams (1)
2. Aluminum rods, 81 cm (3) 12. Slotted mass, 200 grams (4)
3. Clamps, 90-degree angle (2) 13. Slotted mass, 100 grams (4)
4. Hook collars (8) 14. Slotted mass, 50 grams (2)
5. Single pulley (8) 15. Slotted mass, 20 grams (2)
6. Triple-tandem pulley (2) 16. Slotted mass, 10 grams (2)
7. Quadruple parallel pulley (2) 17. Slotted mass hanger, 50 grams (5)
8. Four-step differential pulley with head(1) 18. Slotted mass hanger, 20 grams (1)
9. Tightening rod (1) 19. Slotted mass hanger, 10 grams (1)
10. Nylon cord spool, 100 yards (1)
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Additional Equipment Required
Metric Spring Scale, 20 N
Force Sensor
Rotary Motion Sens or
Any PASCO interface (
A computer
ScienceWorkshop
® or PASPORT™ interface)
Model Number
PS-2104* or CI-6746**
PS-2120* or CI-6538**
* PASCO’s PASPORT sensors (with PS- prefix) require a PASPORT interface for operation.
**PASCO’s
ScienceWorkshop
®
sensors (with CI- prefix) require a
ScienceWorkshop
interface for operation.
SE-8718
Various
(See PASCO cata log)
NA
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Pulley Demonstration System
Introduction
The Pulley Demonstration System (SE-8685) is designed for both the student and the teacher.
Its ease of use is suited for students learning the basics of mechanical advantage with pulley
applications. The various kinds of pulleys and accessories make it the ideal pulley
demonstration tool.
Figure 1: Pulley Demonstration System
PASCO offers a variety of sensors and equipment for measuring force, rotary motion, and
work or energy. PASCO's Metric Spring Scales (SE-8713 to SE-8718) provide an
economical way to instrument the Pulley Demonstration System for measurements of force.
For real-time data collection, and more accuracy and precision, use PASCO's Force and
Rotary Motion Sensors with a computer interface and the Pulley Demonstration System to
demonstrate work/energy theory.
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Equipment Setup
I. Assembling the Pulley Frame
a) Set the base on a sturdy, level surface. b) Thread the two support
rods to the base. c) Fasten both clamps to the top of the support rods.
d) Attach only one side of the horizontal rod to a clamp, so that one
end is free and the other is fixed. e) Slide the hook collars down the
free end of the horizontal rod. f) Secure the free end. g) Tighten the
hook collars using the top screws.
Pulley Demonstration System
Fixed end
clamp
Base
Figure 1: Assembled Frame
clamp
Free end
II.Sample Setup Options (Hanging Pulleys on the Frame
A. Set up a Single Pulley on the Frame
a) Hang the metal hook on the top of the
single pulley on the hook collar. b) Tie string
to a mass hanger and loop it up and around the
pulley. c) Add weight to the mass hanger.
[Note: The free end is for pulling and
attaching measuring devices (i.e. spring scale
or Force Sensor) to measure the force.]
®
Figure 2:
Single Pulley
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