PASCO ME-9447B User manual

Super Pulley Force Table
ME-9447B
Product Description
The Super Pulley Force Table is used to explore the addition of vectors using the concept
of forces in equilibrium. The vectors are forces supplied by the weight of masses that
hang over pulleys. Two masses hanging over pulleys placed at given angles are balanced
by a third mass over a pulley at another angle.
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What's Included
Recommended Accessories
• Mass and Hanger Set (ME-8979)
Force Table Assembly
Includes three detachable legs that can
be stored in the leg holders and clips on
the underside of the table.
1
3× Super Pulley with Clamp
For attaching to the edge of the force
table.
2
3× Stri g Tie
Install one String Tie in the center
recess of the Force Table. Two spares
are included.
3
Spool of Thread
For attaching masses to the String Tie.
4
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Force Table Features
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Scale
For measuring the angles of the force
vectors.
1
Lami ated top
Draw vectors directly onto the table
using a dry erase marker. Use a
cleaning spray to erase the markings.
NOTE: Test the marker by
drawing and erasing a small dot.
2
Storage recess
Insert the stacking pegs into each recess
to stack multiple Force Tables for
storage.
3
Stacki g peg
For inserting into the recess holes on
the top of the force table to stack
multiple Force Tables.
4
Table Leg
Three removable legs that can be
placed beneath the table for storage.
5
Leg holder a d storage clip
For securing the table legs for storage.
6
Threaded hole
For attaching the table legs to the Force
Table.
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Super Pulley Force Table | ME-9447B
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Install the String Tie
The String Tie is used to indicate when forces are in equilibrium. Forces pulling on the
movable clear disk are balanced when the disk is centered in the String Tie ring.The
String Tie needs to be installed in the Force Table before first use.
Figure 1. A String Tie partially inserted into the circular recess of the Force Table.
1. Align the tabs of the String Tie with the notches in the circular recess of the Force
Table.
2. Insert one tab into one of the rectangular holes and press down until it snaps in
place.
3. Press down firmly on the other side of the String Tie until the other tab snaps into
place.
When the String Tie is correctly inserted, the top surface of the clear plastic disk will be
flush with the surface of the Force Table. You do not need to remove the String Tie after
installing it.
Replace the String Tie
Two additional String Ties are included with the Force Table as spares. Use one of the
spares to replace a damaged String Tie.
1. Turn the Force Table upside down.
2. Press the two tabs of the String Tie inward toward each other. Push out the String
Tie to release it from the Force Table.
3. Install a new String Tie as described above.
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Assemble the Force Table
Figure 2. The Force Table completely assembled.
Install the Legs
1. Turn the Force Table upside down. Remove a leg from its storage clip and holder.
2. Line up the leg screw with a threaded hole in the underside of the Force Table.
3. Turn the leg clockwise until it is firmly attached to the table.
NOTE: Do not tighten the legs more than finger tight so that they can be
removed later for storage.
4. Repeat for the other legs.
5. Turn the Force Table right side up.
Super Pulley Force Table | ME-9447B
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Attach the Pulleys
1. Move the pulley yoke to the lower position on the clamp:
a. Unscrew the thumbscrews on both sides of the clamp.
b. Align the holes in the yoke with the lower clamp holes.
c. Insert the and turn each thumbscrew until finger tight.
2. Place the pulley at the end of the table. Gently turn the clamp thumbscrew to secure
the pulley.
3. Repeat for the other two pulleys.
Attach the Threads
1. Cut three 30 cm pieces of thread.
2. Insert each thread individually through the String Tie hole. Pull the ends of each
string through the hole.
3. Tie the ends of the threads together with an overhand knot so that the threads cannot
be pulled back through the hole.
4. Attach a mass to one thread and run the thread over a pulley. Repeat for the other
two threads.
NOTE: Do not attach more than 200 g to each thread.
5. Adjust the height of each pulley so that the thread is parallel with the table.
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Storage
The Force Table may be stored with or without the Super Pulleys attached. Disassembled
force tables can be stacked on top of each other.
Figure 3. Two Force Tables stacked for storage.
1. Remove the legs by unscrewing them from the table.
2. Place each leg in the leg holders and storage clips on the underside of the table.
3. Stack multiple Force Tables by inserting the stacking pegs of one table into the
storage recesses of another table.
Experiments
Print-ready experiment worksheets for this product are available to download from the
PASCO website. Go to www.pasco.com/freelabs and enter ME-9447B to access all
experiments related to this product.
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Appendix
Technical Support
Contact PASCO Technical Support for assistance with this or any other PASCO product.
Address PASCO scientific
10101 Foothills Blvd.
Roseville, CA 95747-7100
Phone [phone] (USA)
1-916-462-8384 (International)
Chat www.pasco.com
email [email protected]
Warranty, Copyright, and Trademarks
Limited Warranty
For a description of the product warranty, see the Warranty and Returns page at www.pasco.com/legal.
Copyright
This document is copyrighted with all rights reserved. Permission is granted to non-profit educational institutions
for reproduction of any part of this manual, providing the reproductions are used only in their laboratories and
classrooms, and are not sold for profit. Reproduction under any other circumstances, without the written consent of
PASCO scientific, is prohibited.
Trademarks
PASCO and PASCO scientific are trademarks or registered trademarks of PASCO scientific, in the United States
and/or in other countries. All other brands, products, or service names are or may be trademarks or service marks
of, and are used to identify, products or services of, their respective owners. For more information visit
www.pasco.com/legal.
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