The figure shows a system of four masses: m1 = 12.9 kg, m2 = 20.7 kg, m3 = 35.7 kg, and m4 = 54.5 kg. The center-to-center distance between any two adjacent masses is 15.7 cm. As shown, the base of the pyramid is in the xy-plane and the m2 = 20.7-kg mass is on the y-axis.
a) What is the magnitude of the gravitational force acting on the m1 = 12.9-kg-mass?
b) What are the xyz-components of the net force?

Question

The figure shows a system of four masses: m1 = 12.9 kg, m2 = 20.7 kg, m3 = 35.7 kg, and m4 = 54.5 kg. The center-to-center distance between any two adjacent masses is 15.7 cm. As shown, the base of the pyramid is in the xy-plane and the m2 = 20.7-kg mass is on the y-axis. 
a) What is the magnitude of the gravitational force acting on the m1 = 12.9-kg-mass?
b) What are the xyz-components of the net force?

anonymous · Answer

picture?

anonymous · Answer

attachment

anonymous · Answer

is this math or physics? just curious

anonymous · Answer

I dont know the formula but I can give rough idea on how to proceed. 
You need to find three force vectors(force m1 to m2 , m1 to m3 , m1 to m4).
Perform vector addition of all 3 vectors to get a resultant vector(say ax+by+cz).
Magnitude will be sqrt(a^2+b^2+c^2)