Pasco Scientific ME-9447 Instruction Manual And Experiment Manual

Instruction Manual
and Experiment Guide
for the PASCO scientific
Model ME-9447

Force Table

PASC O

012-04715

4/96

Revision B

scientific

CAUTION CAUTION

Model Me-9447
FORCE TABLE

Copyright © November 1991 $5.00

012-04715B

Force Table

Table of Contents

Section Page

Copyright andWarranty .................................................................................... ii

Equipment Return ............................................................................................. ii

Introduction ...................................................................................................... 1

Equipment......................................................................................................... 1

Assembly .......................................................................................................... 2

Experiment 1: Vector Addition ........................................................................ 5

Appendix .......................................................................................................... 9

Storage .................................................................................................. 9

Protractor ........................................................................................................ 10

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Force Table

Copyright, Warranty and Equipment Return

012-04715B

Please—Feel free to duplicate this manual
subject to the copyright restrictions below.

Copyright Notice

The PASCO scientific Model ME-9447 Force Table
manual is copyrighted and all rights reserved. However,
permission is granted to non-profit educational institu­tions for reproduction of any part of this manual provid­ing the reproductions are used only for their laboratories
and are not sold for profit. Reproduction under any other
circumstances, without the written consent of PASCO
scientific, is prohibited.

Limited Warranty

PASCO scientific warrants this product to be free from
defects in materials and workmanship for a period of one
year from the date of shipment to the customer. PASCO
will repair or replace, at its option, any part of the product
which is deemed to be defective in material or workman­ship. This warranty does not cover damage to the product
caused by abuse or improper use. Determination of
whether a product failure is the result of a manufacturing
defect or improper use by the customer shall be made
solely by PASCO scientific. Responsibility for the return
of equipment for warranty repair belongs to the customer.
Equipment must be properly packed to prevent damage
and shipped postage or freight prepaid. (Damage caused
by improper packing of the equipment for return ship­ment will not be covered by the warranty.) Shipping
costs for returning the equipment, after repair, will be
paid by PASCO scientific.

Equipment Return

Should the product have to be returned to PASCO
scientific for any reason, notify PASCO scientific by
letter, phone, or fax BEFORE returning the product.
Upon notification, the return authorization and
shipping instructions will be promptly issued.

NOTE: NO EQUIPMENT WILL BE

ACCEPTED FOR RETURN WITHOUT AN
AUTHORIZATION FROM PASCO.

When returning equipment for repair, the units
must be packed properly. Carriers will not accept
responsibility for damage caused by improper
packing. To be certain the unit will not be
damaged in shipment, observe the following rules:

➀ The packing carton must be strong enough for the

item shipped.

➁ Make certain there are at least two inches of

packing material between any point on the
apparatus and the inside walls of the carton.

➂ Make certain that the packing material cannot shift

in the box or become compressed, allowing the
instrument come in contact with the packing
carton.

Credits

This manual authored/edited by: Jon and Ann Hanks

Address: PASCO scientific

10101 Foothills Blvd.
Roseville, CA 95747-7100

Phone: [phone]
FAX: [phone]
email: [e-mail]
web: www.pasco.com

ii

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012-04715B

Force Table

Introduction

The PASCO Model ME-9447 Force Table is used to
physically demonstrate the addition of vectors using
the concept of equilibrium. The vectors are forces
supplied by the weight of the masses that hang over
the pulleys. Masses hanging over pulleys placed at
given angles are balanced by another mass over a
pulley at another angle.

Equipment

The ME-9447 Force Table includes the following:

•Force Table Assembly with Center Post and three
Detachable Legs

•Three Super Pulley Clamps

•Three Mass Hangers

•Plastic Ring

The PASCO force table has several excellent features:

•It is lightweight.

➤ NOTE: Do not exceed 200 g on each pulley.

•It can be stored in a small space.

•The pulleys have very little friction.

•The pulley clamps allow the string to be lowered
close to the angle markings on the table, reducing
the parallax in reading the angle.

•Equilibrium can be obtained by centering a knot
(which gives greater precision) or by centering
the conventional ring.

Additional Equipment Recommended

•Masses such as PASCO model ME-9348 Mass
and Hanger Set or PASCO model SE-8704
Slotted Mass Set

•Metric Ruler such as PASCO model SE-8731

•Protractor such as PASCO model SE-8732

•Spool of Thread

•Instruction Manual/Experiments Guide which
includes protractors that may be reproduced

scientific

PASCO

CAUTION CAUTION

Model Me-9447
FORCE TABLE

Force Table with Center Post

and Detachable Legs

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Super Pulleys with

Clamps (3)

Plastic Ring

Mass Hangers (6)

Spool of Thread

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Force Table

012-04715B

Assembly

Clip

Bottom of Force Table

Figure 1 Force Table: Before and After Assembly

Assembly

➀ Remove the three legs from the clips on the bottom

of the plastic force table disk.

➁ Screw the legs into the holes on the bottom of the

disk (see Figure 1.)

➂ Attach three pulleys and clamps to the rim of the

disk. If more than two forces are to be added, use
the desired number plus one pulley and clamp for
the equilibrant force.

There are two ways to attach the strings to the table:
The first way uses the conventional ring in the center
of the table and the second way uses an anchor string

scientific

PASCO

CAUTION CAUTION

Model Me-9447
FORCE TABLE

through the hole in the center of the table. The advan­tage of the anchor string is that a higher precision can
be achieved because a single knot is being centered
instead of the massive ring. The anchor string keeps
the masses from falling to one side when the system is
not in equilibrium.

➤ NOTE: In both methods it is important to
adjust the pulleys so that the strings are parallel
to the top surface of the Force Table, and as
close to the top surface as possible. When
adjusting the pulleys, don't let the ring rest on the
top surface.

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