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ERIC Number: EJ787030
Record Type: Journal
Publication Date: 2008-Mar
Pages: 3
Abstractor: Author
Reference Count: 6
ISSN: ISSN-0031-9120
Finding the Density of a Liquid Using a Metre Rule
Chattopadhyay, K. N.
Physics Education, v43 n2 p203-205 Mar 2008
A simple method, which is based on the principle of moment of forces only, is described for the determination of the density of liquids without measuring the mass and volume. At first, an empty test tube and a solid substance, which are hung on each side of a metre rule, are balanced and the moment arm of the test tube is measured. Keeping the solid substance in the same position, the test tube is filled with a liquid of known density up to a mark and then balanced. The moment arm is measured. Then the test tube is filled with the unknown liquid (whose density is to be determined) up to that mark and after balancing the moment arm is measured. By measuring these three moment arms and using the density of the known liquid, the density of the unknown liquid is determined. (Contains 3 figures.)
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A