Forces+in+the+nucleus

=Forces in the Nucleus= In nature there are 2 forces which we experience in our every day activities. They are the: 1) Electromagnetic force - forces between electric charges 2) Gravitational force - forces between masses The forces are not enough to explain the stability of the nucleus. Knowing that the size of a nucleon is about 1fm (10-15m or one femtometre) and knowing that the electromagnetic and gravitational forces are expressed by the similar equations

These forces are not sufficient to explain the structure and we also need to introduce the idea of two additional forces 3) Strong force 4) Weak force

These four forces make up the fundamental forces Homework - Using the data for stable nuclei, plot the proton number against the nucleon. What can you say from this plot? what is the relationship between proton and neutron numbers? Are they equal in number? What sort of shape is the graph?