Total Mechanical Energy: Circular Orbit (E = −GMm/2r (circular))

jee-mainjee-advancedneet-ug

E = −GMm/2r (circular)

What each symbol means

SymbolWhat it stands for
ETotal mechanical energy
KGMm/2r
U−GMm/r
rOrbit radius

When to use this

Circular orbit about fixed M; m ≪ M. K = |E|, U = 2E.