Thankyou for your responses. I have learned something new, especially about the attractions of quarks.
I have evolved my question, however:
Does gravity actually get 'used up' as it converts into kinetic energy?
If so, then as the planets orbit the sun there must be a lot more gravity...
I don't understand why it is that the nuclear forces only apply at subatomic distances. If it is the case that they only apply at subatomic distances then surely that must be because the force has decayed over distance much the same as gravity does.
Thus my hypothesis that en masse the...