Cheng-Gang Shao, Liang-Cheng Tu, Shan-Qing Yang, and Jun Luo
School of Physics, Huazhong University of Science and Technology Wuhan 430074, People’s Republic of China
(Received February 15, 2011)

Abstract

The authors of the paper [1], Grav. Cosmol. 16, 323 (2010), presented two methodologies for calculating the gravitational torque while measuring the gravitational constant G by a dynamic method. We have checked their calculations and found an evident error which directly leads a wrong conclusion in the paper. Besides, their discussion on the advantage of the methodology includes a logical contradiction.