Electronic balance and object on a string above a scale

Code Number: 2B40.52

Demo Title: Specific Gravity

Condition: Good

Principle: Specific Gravity

Area of Study: Fluids

Equipment:

Electronic balance, various objects on strings, 1000 ml with water.

Procedure:

Place the beaker with water on the electronic balance and tare. Dip the object into the water and the weight that registers on the balance is equal to the buoyant force. Weight of the object in air divided by the buoyant force will give you the specific gravity.

References:

Paul L. Willems, "Specific Gravity with Electronic Balances", TPT, Vol. 36, # 1, p. 10, Jan. 1998.

Disclaimer

These demonstrations are provided only for illustrative use by persons affiliated with The University of Iowa and only under the direction of a trained instructor or physicist. The University of Iowa is not responsible for demonstrations performed by those using their own equipment or who choose to use this reference material for their own purpose. The demonstrations included here are within the public domain and can be found in materials contained in libraries, bookstores, and through electronic sources. Performing all or any portion of any of these demonstrations, with or without revisions not depicted here entails inherent risks. These risks include, without limitation, bodily injury (and possibly death), including risks to health that may be temporary or permanent and that may exacerbate a pre-existing medical condition; and property loss or damage. Anyone performing any part of these demonstrations, even with revisions, knowingly and voluntarily assumes all risks associated with them.

Instructional Resources and Lecture Demonstrations

2B40.52 - Specific Gravity

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