Question

Q2. A shaft carries four masses A, B, C and D of different magnitude and revolving at radii as mentioned below in planes measured from A at 300 mm, 400 mm and 700 mm. The angles between the cranks measured anticlockwise are A to B 450B to C 700 and C to D 1200 . 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. If the balancing masses revolve at a radius of 250 mm, find their magnitudes and angular positions graphically.

i. The magnitude of mass X and Y

ii. The angular position of mass X and Y.

iii. Draw Space diagram.

iv. Couple Polygon

v. Force Polygon

vi. Tabular Column

Given :

Answer 1

Solution :

For mass x :

Angular position : 145 ° clockwise from mass A

Mass x = 142 kg

For mass y :

Angular position: 12 ° clockwise from mass A.

Mass Y : 73 kg

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