Real life phenomenon of atomic physics

An atomic physicist studies the behavior of electrons, protons, light, atoms and simple molecules. They also conduct research to understand atomic energy, which is the source of power for nuclear reactors, nuclear generators and nuclear weapons

the moving of the box is a result of centripetal force. think of that  as a car or a truck in this case creates a turn, the force of friction performing upon the turned wheels of the car runs centripetal force obligatory for circular motion for the things inside it.