A circular plate of uniform thickness has a diameter 56 cm. A circular portion of diameter 42 cm is removed from one edge as shown in the figure. The centre of mass of the remaining portion from the centre of plate will be :
Text Solution
Verified by ExpertsThe correct answer is:
C
Coordinate of centre of mass of large disc at its centre (0, 0) coordinate of centre of mass of small disc (7, 0)
m 2 = σπ (28 cm) 2 m 1 = (– σ ) π (21 cm) 2
= – 9cm
Y CM = 0
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