Immagini

DESCRIPTION

Exhibit 969 is a heavy metal base with three leveling screws (T1, T2 and T3) supporting a circular platform P on a column F that can rotate with minimum friction around a verical axis x. On the column is wound a thin string that passes over a pulley C supported by a structure soldered to the base. On the other end of the string is hung a mass m. A vertical metal strip I soldered to the base serves as indicator of platform rotational position. The circumference of the platform, 3 cm thick, is divided in intervals of 5 ° with A at zero.

From the time necessary for m to descend a certain distance one can determine the average velocity, then the final velocity, then how the gravitational potential energy is divided between m and the rotating complex knowing the radius of F, then the moment of inertia. Upon repeating with another object on the platform, one can determine the total moment of inertial and how much was added by B.

See also the similar exhibit 970.

BIBLIOGRAPHY

• [1] Giovanni Bussetti,"Esercitazioni Pratiche di Fisica", Quarta Edizione, Libreria Editrice Universitaria Leprotto & Bella, Torino. Pag. 267
• [2] Eligio Perucca,"Fisica Generale e Sperimentale", Volume Primo, UTET Torino,1937. Pag. 275.

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