If we consider a box( in our quantum world ) with three balls having total mass 'M= m1 + m2 +m3' . After changing their positions, now, calculating the mass will give another value which is not equal to 'M' but 'M*=m*1 +m*2 + m*3)', which implies our mass is not conserved. then how could energy...
Thanks for your reply.
just
THANKS FOR THE REPLY.
but... my doubt is still unclear. just forget about the branch. Only think about our Apple hanging on that. I thought, Apple is in equilibrium because of gravitational force downwards and reaction force upwards( according to Newtonian Gravity)...
If an apple hanging in the tree has only reaction upwards, then what will happen to a Newtons third law? how is it that there is no "force " downwards, but have spacetime curvature which "mimics" a force. why can't spacetime curvature be itselt a force?