Question 567907
The gravitational attraction A between two masses varies inversely as the square of the distance between them.  If the force of attraction is 2.25 lbs when the masses are 4 ft apart, what is the attraction when the masses are 6 ft apart?

My answer = 3 lbs.
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{{{2.25*4^2 = F*6^2}}}

F = 1 lb