PASCO AP-8219 Manual de usuario

Instruction Manual

012-11233A

Replacement Gravity Balls

AP-8219

800-772-8700 www.pasco.com

*012-11233*

Introduction

The AP-8219 Replacement Gravity Balls set is

designed to replace the large lead masses in the

AP-8215 Gravitational Torsion Balance.

The Replacement Gravity Balls set consists of two

large tungsten spheres (1.5 kilogram each), and two

adapter rings. The rings allow the tungsten spheres

to rest on the Large Mass Swivel Support of the

Gravitational Torsion Balance (see Figure 1).

The tungsten Large Mass has a radius of 27.6 milli-

meters. This value is used in the calculation of G,

the universal gravitational constant.

Assembly

Place an Adapter Ring into the hole at one end of

the Large Mass Swivel Support on the Gravitational

Torsion Balance. Repeat for the other adapter ring.

Carefully place the Large Masses onto the Adapter

Rings on both ends of the Large Mass Swivel Sup-

port.

The Adapter Ring allows the center of mass of the

Large Mass to be in alignment with the center of

mass of the Small Mass that is inside the Gravita-

tional Torsion Balance case.

Adapter rings

Tungsten spheres

Included:

Large Mass, Gravitational Torsion Balance (2)

Adapter Ring (2)

Required: Model

Gravitational Torsion Balance AP-8215

Attach to

Earth Ground.

GRAVITATIONAL

TORSION BALANCE

AP-8215

Large Mass

Adapter Ring

Large Mass

Swivel Support

Gravitational

Torsion Balance

Figure 1: Large Mass and Adapter RIng

Replacement Gravity Balls Technical Support

See the Instruction Manual for the AP-8215 Gravitational Torsion Balance for information about setting up and

using the balance.

Safety Precaution

The large masses are made of tungsten and are not toxic. However, be careful not to drop a large mass.

Technical Support

For assistance with any PASCO product, contact PASCO at:

For more information about the Replacement Gravity Balls and the latest revision of this Instruction Manual,

visit:

www.pasco.com/go?AP-8219

Limited Warranty For a description of the product warranty, see the PASCO catalog.

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.

Address: PASCO scientific

10101 Foothills Blvd.

Roseville, CA 95747-7100

Phone: 916-786-3800 (worldwide)

800-772-8700 (U.S.)

Fax: (916) 786-7565

Web: www.pasco.com

Email: [email protected]

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