An equilateral triangle 59.0 m on a side has a m1 = 20.00 kg mass at one corner, a m2 = 35.00 kg mass at another corner, and a m3 = 115.00 kg mass at the third corner. Find the magnitude and direction of the net force acting on the 20.00 kg mass.
________° counterclockwise from the positive x-axis
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The 4 pages solution shows in great detail how to calculate the total gravitational force on a point mass due to other masses around it.