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prayashjeet chanda Grade: 12
        

Nuclear force is always attractive, but in wider range it is repulsive! Why?

7 years ago

Answers : (1)

Anurag Kishore
37 Points
										

Hi


 


The nuclear force is only felt among hadrons, (which is a particle made of quarks held together by the strong force (similarly to how atoms and molecules are held together by the electromagnetic force). At much smaller separations between nucleons the force is very powerfully repulsive, which keeps the nucleons at a certain average separation. Beyond about 1.7 femtometer (fm) separation, the force drops to negligibly small values.


At short distances, the nuclear force is stronger than the Coulomb force; it can overcome the Coulomb repulsion of protons inside the nucleus. However, the Coulomb force between protons has a much larger range and becomes the only significant force between protons when their separation exceeds about 2.5 fm.


The nuclear force is nearly independent of whether the nucleons are neutrons or protons. This property is called charge independence. It depends on whether the spins of the nucleons are parallel or antiparallel, and has a noncentral or tensor component. This part of the force does not conserve orbital angular momentum, which is a constant of motion under central forces.


 


 


Thanks


Anurag Kishore

7 years ago
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