If the driving (effort) gear has 32 teeth and the driven (load) gear has 160 teeth, calculate the gear ratio defined as the ratio of teeth of the driven gear to the driving gear.

Two masses of 3 kg and 6 kg are attached at radii of 0.2 m and 0.1 m respectively in the same angular plane. What should be the mass of a third counter-mass placed at a radius of 0.15 m in the opposite direction to balance the system dynamically?