Beams servoed rotational method

Beams servoed rotational method

[′bēmz ′sər‚vōd rō′tā·shən·əl ‚meth·əd]
(engineering)
A method of measuring the gravitational constant by determining the inertial reaction of a torsional pendulum to the angular acceleration of a rotating table that is required to cancel the attraction of the pendulum to two large masses.