The centres of two spheres which are identical are at 50 cm apart. If the gravitational force between the spheres be 4.0 N find the mass of each sphere Given G-6.67 x 10 Nm³kg.
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Answer:
F = Gm/r²
m=Fr²/G
m=4x.05×0.5/6.67×10³
m=149.93kg
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