Construção de um gravímetro interferométrico de mola para medição da aceleração gravitacional

Abstract

This work has as main objective to present the construction of a low-cost gravimeter, which can measure the value of gravitational acceleration. The equipment uses a Michelson-Morley interferometer where one of its mirrors is fixed in a rotational system, whose main elements are the spring and a test mass. Through the analysis of torques it was possible to obtain a mathematical expression for gravity as a function of the number of displaced fringes and, thus, to determine the value of gravity with satisfactory precision.