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  • Which of the following points is the likely position of the center of mass of the system shown in Fig. 7.1?(a) A (b) B (c) C (d) D

Which of the following points is the likely position of the center of mass of the system shown in Fig. 7.1?

(a) A
(b) B
(c) C
(d) D

Answers (1)

The answer is the option (c) C

The volume of the hollow sphere is occupied equally by the air and sand. Since the pressure exerted by the air region is less than that of sand, the mass of sand is greater than the air. The centre of mass shifts towards a heavier portion which in this case is sand. B is exactly at the line dividing air and sand, so it is incorrect. D is at the farthest end and divides the sand area very unequally, so it also cancels out. C is almost at the centre of the mass. 

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