There are three spheres- 1,2 and 3 of same mass M and radius R placed like in the picture. If the force applied by sphere 1 and 2 on the sphere 3 is ?3GM?/KR? ( Root is only on 3), then what is the value of K? Give explanation. ( Please give answer fast, it's urgent, Thank you)( Please consider that it will not be solved by simple formulas of class 9)