A shafts carries four masses A, B, C and D of magnitude 200 kg, 300 kg, 400kg and 200 kg

#theoryofmachine #balancingofrotatingmasses #forceandcouplepolygon #dynamicsofmachinery #education #excellentideasineducation #mechanicalengineering #annauniversity #exam A shaft carries four masses A, B, C and D of magnitude 200 kg, 300 kg, 400 kg and 200 kg respectively, revolving at radii 80 mm, 70 mm, 60 mm and 80 mm in planes measured from A at 300 mm, 400 mm and 700 mm, the angles between the cranks measured anticlockwise are A to B 45°, B to C 70° and C to D 120°. The balancing masses are to be placed in planes X and Y. The distance between the planes A and X is 100 mm between X and Y is 400 mm and between Y and D is 200 mm. If the balancing masses revolved at a radius of 100 mm, find their magnitudes and angular positions.