Subjects/Basic Physics/GravitationSection 10GravitationLaw of universal gravitationCopy LaTeXF=Gr2m1m2Vector formF12=−Gr2m1m2r^View detail →Gravitational field/accelerationCopy LaTeXg=r2GMView detail →Universal gravitational potential energyCopy LaTeXU(r)=−GrMmView detail →Gravitational potentialCopy LaTeXΦ=−rGMandU=mΦView detail →Circular orbital velocityCopy LaTeXvorb=rGMView detail →Orbital periodCopy LaTeXT=2πGMr3EquivalentlyT2=GM4π2r3View detail →Escape velocityCopy LaTeXvesc=R2GMView detail →Total energy of a circular orbitCopy LaTeXE=−2rGMmView detail →