Calculate the magnitude of electrostatic force exerted by protons on electron in hydrogen atom and compare it with weight........
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Coulomb’s law gives the magnitude Fe of the electric force between the electron and proton as
Fe=k|q1q2|r2=ke2r2
where k=8.99×109N?m2/C2. The gravitational force F? g has magnitude Fg:
Fg=Gm1m2r2=Gmempr2
where G=6.67×10?11N?m2/kg2. The ratio of the two forces is
FeFgFeFg===(ke2r2)(r2Gmemp)=ke2Gmemp(8.99×109N?m2/C26.67×10?11N?m2/kg2)×(1.60×10?19C)2(9.11×10?31kg)(1.67×10?27kg)2.27×1039
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