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UniversallawofGravity
TheEarthattractsVenuswithalargergravitationalforcethanVenusattractstheEarth.
TheplanetVenushasamuchsmallergravitationalfieldstrengththantheEarth.
IfthedistanceVenusisfromtheEarthisdoubledthegravitationalattractiontheEarthhasonVenusisquartered.
Thegravitationalforceactingoneachplanetisdirectlyproportionaltotheproductoftheplanet`smasses.
WhenusingtheUniversalLawofGravity,thedistancebetweentheplanetsisALWAYSmeasuredfromsurfacetosurface.
IfVenus’masswasdoubledthegravitationalforceofattractionontheEarthwouldbedoubledaswell.