Abstract
The cantilever beam is a well-known mechanical model among science and engineering students. In general physics experiments, the light spot deflection method serves as an optical amplification technique for measuring small rotations. In this study, a method for measuring the angular deformation of a cantilever beam using the light spot deflection method is proposed and applied to weight measurement. Furthermore, we replaced the scaleplate in the traditional light spot deflection method with charge-coupled device (CCD). By employing the linear arrangement of CCD pixels and the digital speckle algorithm, the convenience and accuracy of the spot movement measurement have been greatly improved.
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