Two identical balls each have a mass of 10g. What charge should these balls be given so that their interaction equalizes the force of universal gravitation acting between them? the radii of the balls may be ignored in comparison to distance between them.
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That means that the two forces have to be the same.
Fe=Fg
(1/ 4π€)q^2 ^/r^2 = G 0.010^2 /r^2
q^2 =G (0.0001)/(1/ 4π€)
Where G is the universal constant and € the permeability
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Dear student
Fe=Fgravitationkq2r2=Gm2r2kq2=Gm2q=mGk−−√ne=mGk−−√n=meGk−−√=10×10−31.6×10−196.6×10−119×109−−−−−−−√=10−3+19+11.66.6×10−11−99−−−−−−−−√=2.56×10−3+19+1−103×1.6=0.53×10^7
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