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A uniform metallic spherical shell is su...

A uniform metallic spherical shell is suspended form celling. It has two holes A and B at top and bottom respectively. Which of the following is/are true :-

A

If B is closed and sand is poured from A, centre of mass first rises and then falls

B

If shell is completely filled with sand and B is opened then centre of mass falls initially

C

If shell is slightly filled with sand and B is opened, then centre of mass falls.

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
Initinally when the shell is empty the C.M. lies at its geometric centre. Also when the shell is filled with sand CM lies at its geometric centre.
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