TUBE FOR EDUCATIONAL MOVEMENT STUDY BY GRAVITY

摘要

tube for didactic study of gravity movement. addresses the present invention patent application for an improvement of the object free fall experiment inside a vertical tube, equipped with equidistant passage sensors, which had the detector circuit improved. essentially, the invention turns to the field of determining the physical parameters of the movement and calculating the other physical quantities, such as, for example: sliding friction, rolling friction, air resistance, induced current in the coil and others. the invention comprises a circular tube (1), which is fixed to a rectangular base (2), the said fixing being carried out by means of an articulation (3) which allows the circular tube (1) to be from a position parallel to the rectangular base ( 2) (inclination 0º) to a vertical position (90º); optical sensors (5) are installed on the walls of the circular tube (1), along its length, at regular intervals, each optical sensor (5) consisting of an infrared emitter (6) and a photoelectric receiver (7) in position diametrically opposite the wall of the circular tube (1); when the object (o) passes between the infrared emitter (6) and the photoelectric receiver (7), the flow of infrared light between them is interrupted and the duration of this interruption is recorded in the electronic circuit (8).