CBSE Class 11-science Answered
Gravitation
Asked by | 04 Jan, 2010, 07:04: PM
Expert Answer
False.
PE = -GMm(1/r2 - 1/r1) = GMm(r2 - r2)/(r2 r1)
Hence when r2 ≈ r1 = R
then,
PE = -GMm(1/r2 - 1/r1) = GMm(r2 - r2)/R2
= gm(r2 - r2) ......using GM/R2 = g.
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