Measurement of Moment of Inertia Based on Torsion Pendulum

Abstract:

The measurement system based on torsion pendulum is presented to measure the moment of inertia considering the effect of air damping. With the introduction of air-hovered turntable, the influence of friction force is reduced. In order to increase the effect of the air damping, damping paddles are used to increase the area of test object. The pendulum motion of test object can be measured by the displacement sensor. The moment of inertia of test objects can be calculated by the damping ratio and oscillation period. The experimental results show that the relative measurement error of the moment of inertia of the test objects is less than 2%.

• Periodical: Advanced Materials Research (Volumes 588-589)
• Pages: 964-967
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.588-589.964
• Online since: November 2012
• Authors: Yan Zhao, Xiao Lin Zhang, Jun Wang, Wen Yan Tang
• Keywords: Air Damping, Displacement Sensor, Moment of Inertia, Torsion Pendulum

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