An inexpensive capacitive force sensor laboratory for introductory physics labs

ORAL

Abstract

We present a laboratory activity in which students build and characterize a capacitive force sensor. The activity uses a simple foil capacitor and LCR meter. We have tried the activity with algebra-based physics students but it is appropriate for other levels. The lab uses ideas of approximation either qualitatively for high school or algebra-based physics, or via Taylor expansion for calculus-based physics. For advanced undergraduate students we are exploring using the sensor in an LC oscillator. The experiment highlights application of physics in an interesting context.

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Authors

  • Chris Nakamura

    Saginaw Valley State University Physics Department

  • Paul Irving

    National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA, Univ of Michigan - Ann Arbor, 15611860790, Michigan State University, Western Michigan University, Kent State University, University of St Andrews, University of Baghdad, King Abdullah University of Science and Technology, Jiangsu Normal University, Xuzhou, Jiangsu, China, Bowling Green State University, Bowling Green Ohio, USA, Bowling Green State Univ, Air Force Research Laboratory Sensors Directorate, Saginaw Valley State University Physics Department

  • Paul Irving

    National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA, Univ of Michigan - Ann Arbor, 15611860790, Michigan State University, Western Michigan University, Kent State University, University of St Andrews, University of Baghdad, King Abdullah University of Science and Technology, Jiangsu Normal University, Xuzhou, Jiangsu, China, Bowling Green State University, Bowling Green Ohio, USA, Bowling Green State Univ, Air Force Research Laboratory Sensors Directorate, Saginaw Valley State University Physics Department

  • Paul Irving

    National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA, Univ of Michigan - Ann Arbor, 15611860790, Michigan State University, Western Michigan University, Kent State University, University of St Andrews, University of Baghdad, King Abdullah University of Science and Technology, Jiangsu Normal University, Xuzhou, Jiangsu, China, Bowling Green State University, Bowling Green Ohio, USA, Bowling Green State Univ, Air Force Research Laboratory Sensors Directorate, Saginaw Valley State University Physics Department