Sec. 5-1 Force Laws Physicists have traditionally identified four basic forces (1)tne cirayiracional force (2)the elecirormacnetic force (3)the weak nuclear force, which causes certain radioactive decay processes and certain reactions among the fundamental particles (4)the strong force, which operates among the fundamental particles and is responsible for binding the nucleus togetherSec. 5-1 Force Laws Physicists have traditionally identified four basic forces: (1) the gravitational force (2) the electromagnetic force (3) the weak nuclear force, which causes certain radioactive decay processes and certain reactions among the fundamental particles. (4) the strong force, which operates among the fundamental particles and is responsible for binding the nucleus together