1.

Let g be the acceleration due to gravity at earth's surface and K be the rotational kinetic energy of the earth. Suppose the earth's radius decreases by 2% keeping all other quantities same, then

A. g decreases by 2% and K decreases by 4%
B. g decreases by 4% and K increases by 2%
C. g increases by 4% and K decreases by 4%
D. g decreases by 4% and K increases by 4%
Answer» D. g decreases by 4% and K increases by 4%


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