A spherical planet has a mass MP and diameter DP. A particle of mass m falling freely near the surface of this planet will experience an acceleration due to gravity, equal to
${{4G{M_P}} \over {D_P^2}}$
${{G{M_P}m} \over {D_P^2}}$
${{G{M_P}} \over {D_P^2}}$
${{4G{M_P}m} \over {D_P^2}}$
Solution
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