Q 48. A rotating disc of 1 m diameter has two eccentric masses of 0.5 kg each at radii of 50 mm and 60 mm at angular positions of and , respectively. A balancing mass of 0.1 kg is to be used to balance the rotor. What is the radial position of the balancing mass?
(A) 50mm
(B) 120mm
(C) 150mm
(D) 280mm
Answer: (C)
Explanation: