What is the mass of the larger sphere?

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The gravitational force between 2-spheres is 2.50x10 -8 power N. Their centers are 105 cm apart. The smaller sphere has a mass of 8.2 kg. Find the mass of the larger sphere.

Oct 20th, 2014

Using Newton's Gravitational Law:  F=(G*m1*m2)/d^2

where G = 6.67*10^-11 N.m^2/kg^2

by substitution:  2.5*10^-8 = (6.67*10^-11) * (8.2) *m2 / (105*10^-2)^2

therefore, m2 = 0..0504*10^-3 kg = 50.4 g

Oct 20th, 2014

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Oct 20th, 2014
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