15. सिम्ररनको तौल पृथ्विको सहतमा 600N छ भने उनको तौल 300N हुनको लागि I (R= 64 x 105m) (If Simran's weight is 600N on the earth. How far should she be from the centre of
the earth so that his weight will be 300N? (Radins of earth is
64 x 105m)​