A coordinate system (in meters) is constructed on the surface of a pool table, a

Question

A coordinate system (in meters) is constructed on the surface of a pool table, and three objects are placed on the coordinate system as follows: a 1.9 kg object at the origin, a 2.9 kg object at (0 m,1.8 m), and a 4 kg object at (3.8 m,0 m). Find the resultant gravitational force exerted on the object at the origin by the other two objects. The universal gravitational constant is 6.672 Times 10-11 N m2/kg2. Answer in units of N At what angle does it act with respect to the positive x axis? Let counterclockwise be positive, within the limits of -180 degree to 180 degree. Answer in units of degree

Explanation / Answer

Fg=Fxi+Fyj
Fy=1.9*2.9*6.67*10^-11/1.8^2=.1134 nN j
Fx=1.9*4*6.67*10^-11/3.8^2 =3.512*10^-11N i
Fnet=.3512i+1.134j *10^-10 N
F=1.187*10^-10 N

=72.8 degrees

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