The value of gravitational constant G in MKS system is 6.67×10^-11 N-m^2 kg^-2. What will be its value in CGS.
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We know that in SI
G = 6.67 x 10-11 Nm2/kg2
so, when expressed in VGS units we shall convert N to dynes, m to cm and kg to g, thus
G = 6.67 x 10-11 x [(105dynes x (102)2cm2 ) / (103)2 g2]
= 6.67 x 10-11 x [ (105 x 104 ) / 106 ]
thus,
in CGS system
G = 6.67 x 10-8 dyne.cm2/g2
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