Three identical very dense masses of 7600 kg each are placed on the x axis. One mass is x1= -140cm, one is at the origin, and one is at x2=450cm What is the magnitude of the net gravitational force Fgrav on the mass at the origin due

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Hi please help:

Three identical very dense masses of 7600 kg each are placed on the x axis. One mass is

x1= -140cm, one is at the origin, and one is at x2=450cm

What is the magnitude of the net gravitational force Fgrav on the mass at the origin due to the other two masses?
Take the gravitational constant to be G=6.67 x 10^-11N•m^2/kg^2

express answer in Newton's to three significant figures.

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