Abstract
An accessible smartphone-based experimental set-up for measuring a spring constant is presented. Using the smartphone ambient light sensor as the motion timer that allows for the measurement of the period of oscillations of a vertical spring-mass oscillator we found the spring constant to be 27.3 0.2 N m−1. This measurement is in a satisfactory agreement with another experimental value, 26.7 0.1 N m−1, obtained via the traditional static method.
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