A Didactic Note for Laboratory Determination of Local Acceleration of Gravity

Adam Usman, Abbas Baba Kura, Ibrahim Salihu


We describe a laboratory experiment in which the local acceleration of gravity, g, was determined. This work is primarily one utility of a theory for conversion of mechanical energy into electrical energy. It involves measurement of impact time between two metallic bodies. The setup consists of a thin copper wire suspending a pendulum metal bob. The wire was passed over into connection with a chosen resistor in series with an electrolytic capacitor. The latter connected to a larger metallic body. At a determined height, the bob was allowed to make an impact with the larger metallic body to induce an electric current of which voltage was recorded by means of a voltmeter connected across the electrolytic capacitor. Errors due to oscillations in the conventional pendulum experiment were avoided because only one impact was allowed for every set of readings. Interesting common analyses were found sufficient for calculations of standard errors on g.

Keywords: Didactic, local acceleration of gravity, conversion of mechanical energy, collision time, capacitor, pendulum bob, impact time, error calculation

PACS: 01.40.-d, 01.50.Pa, 01.40.J-, 01.40.gb, 01.30.lb

Full Text: PDF
Download the IISTE publication guideline!

To list your conference here. Please contact the administrator of this platform.

Paper submission email: APTA@iiste.org

ISSN (Paper)2224-719X ISSN (Online)2225-0638

Please add our address "contact@iiste.org" into your email contact list.

This journal follows ISO 9001 management standard and licensed under a Creative Commons Attribution 3.0 License.

Copyright © www.iiste.org