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Simple Pendulum Determination of the Gravitational Constant

Harold V. Parks and James E. Faller
Phys. Rev. Lett. 105, 110801 – Published 7 September 2010; Erratum Phys. Rev. Lett. 122, 199901 (2019)

Abstract

We determined the Newtonian constant of gravitation G by interferometrically measuring the change in spacing between two free-hanging pendulum masses caused by the gravitational field from large tungsten source masses. We find a value for G of (6.67234±0.00014)×1011m3kg1s2. This value is in good agreement with the 1986 Committee on Data for Science and Technology (CODATA) value of (6.67259±0.00085)×1011m3kg1s2 [Rev. Mod. Phys. 59, 1121 (1987)] but differs from some more recent determinations as well as the latest CODATA recommendation of (6.67428±0.00067)×1011m3kg1s2 [Rev. Mod. Phys. 80, 633 (2008)].

  • Figure
  • Figure
  • Received 22 June 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.110801

© 2010 The American Physical Society

Erratum

Authors & Affiliations

Harold V. Parks1,2,* and James E. Faller1

  • 1JILA, University of Colorado and National Institute of Standards and Technology, Boulder, Colorado 80309, USA
  • 2Sandia National Laboratories, Albuquerque, New Mexico 87185, USA

  • *hvparks@sandia.gov

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Issue

Vol. 105, Iss. 11 — 10 September 2010

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