A rotating disc of 1 m diameter has two eccentric masses of 0.5 kg eac – McqOptions

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1.	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 the angular positions of 0 degree and 150 degree 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.	50 mm
B.	120 mm
C.	150 mm
D.	280 mm
Answer» D. 280 mm

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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 the angular positions of 0 degree and 150 degree 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?