Two identical particles each of mass M and charge Q are placed a certain distance part. If they are in equilibrium under mutual gravitational and electric force then calculate the order of MQ in SI units.
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Updated on : 2022-09-05
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As the given system of charges are in equilibrium,
Fe is the electric force between the charges which is
repelling them while Fg is the gravitational force of attraction.
or , KQ2=GM2
or , (MQ)2=(KG)
or , MQ=(GK)21
as G = 6.67×10−11Nm2/Kg2
and K = 9×109Nm2/C2
we get MQ=0.86×10−10 c / kg
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