Residual Strong Force Holds the Nucleus
Recall from the Standard Model Path that protons are positive and that the
nucleus is held together by the
residual strong interaction.
A nucleus would blow
apart from the electrical repulsion between protons if it weren't "glued"
together by the gluon particles which affect every part of the nucleus.
Think of a nucleus as a tightly cocked spring
(the electrical repulsion ) held in place by a very big rope
(the residual strong force).
Even though there is a lot of stored-up energy in the spring,
it can't release this energy because the rope is too Strong.