tonyza2006

Hi there, I don't understand why the equal of Newton's law of gravitation F = Gm1m2/d(squared) is different for no spherical objects. In the image of my attachment there are one spherical object and a no spherical object. So why if there are not very distant the equal used is F = Gm1m2/d(d+L). How It's used (d).(d+L) on the contrary (d).(d), which is the original equal? Thanks Tony PS: Sorry about my english.