if M is the mass of the earth and R is the radius then unit of gravitational onstant
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Well, the way to find the units of the constant are to consider the equation it takes part in:
F=Gm1m2r2F=Gm1m2r2
FF is a force: so it's measured in newtons (NN). A newton is the force required to give a kilogram an acceleration of a metre per second per second: so, in SI units, its units are kgm/s2kgm/s2. m1m1 and m2m2 are masses: in SI units they are measured in kilograms, kgkg, and rr is a length: it is measured in metres, mm.
F=Gm1m2r2F=Gm1m2r2
FF is a force: so it's measured in newtons (NN). A newton is the force required to give a kilogram an acceleration of a metre per second per second: so, in SI units, its units are kgm/s2kgm/s2. m1m1 and m2m2 are masses: in SI units they are measured in kilograms, kgkg, and rr is a length: it is measured in metres, mm.
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then the unit of gravitational constant be k 0r 'G'
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