Q. 14 The center of gravity of a body on the earth coincides with its center of mass for a small object whereas for an extended object it may not. What is the qualitative meaning of small and extended in this regard? For which of the following two coincides? A building, a pond, a lake, a mountain?
When the vertical height of the object is very small as compared to the earth's radius. we call the Object small, otherwise, it is extended.
Step 2: Give examples of small and extended objects.
(i) Building and pond are small objects.
(ii) A deep lake and a mountain are examples of extended objects.
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