calculate the minimum energy required to launch a 250kg satellite from earth's surface in a circular orbit at an altitude of 2R and R is the radius of the earth ?(Re=6400km, Me=6*10^24) ******no links pls******
 

Dear Student,

Ef=-GMm6REi=-GMmRW=Ef-EiW=-GMm6R--GMmRW=-GMm+6GMm6RW=5GMm6RW=5×6×1024×2506×6400×103W=1.95×1020 J

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