Question

42. Let g be the acceleration due to gravity at earth's
surface and K the rotational kinetic energy of the
Suppose the earth's radius decreases by 2%. Keepi
mass to be constant, then
(a) g increases by 2% and K increases by 2%
(b) g increases by 4% and K increases by 4%
(c)
g increases by 4% and K increases by 2%
(d) g increases by 2% and K increases by 4%​

Answer 1

Answer:

b.g increases by 4% and K increases by 4%

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