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

Let g be the acceleration due to gravity at earth's surface and K be t

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
Answer» g decreases by2% and K decreases by 4% . g decreases by 4% and K decreases by 2% . g increases by 4% and K increases by 4% g decreasesby 4% and K increases by 4% Solution :`implies` According to EQUATIONS `g = (GM)/r^2 and K=1/2 L^2/I` `g prop 1/R^2 and K prop 1/R^2 "" ( :. I =2/5 MR^2)`