To prevent the rotation caused by frame, which of the following quantity is added?
(a) Weight at a distance
(b) Weight at the centre
(c) Ball bearings
(d) Welded joints
This question was posed to me in an international level competition.
The above asked question is from Belt Transmission Dynamometer-Froude or Throneycraft Transmission Dynamometer in section Brakes and Dynamometers of Machine Dynamics