H2P-85

Newton’s law of gravitation

H2 Physics · JC 1 · Hard · Newton’s law of gravitation

Two identical small spheres, each of mass 5.0 kg, are placed 0.80 m apart in vacuum. Using Newton’s law of gravitation, find the magnitude of the gravitational force between them. Take

G = 6.67\times10^{-11}\,\text{N m}^2\text{kg}^{-2}

$2.6\times10^{-9}\,\text{N}$
$4.2\times10^{-10}\,\text{N}$
$1.7\times10^{-8}\,\text{N}$
$6.7\times10^{-11}\,\text{N}$

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