Hi, please help with this gravity worksheet, thank you.

1. Three identical meteoroids of mass 40Mg are in the xy plane at coordinates: (0,0) (3km, 0) (3km, 2km) The meteoroids are far from any star or planet and only feel forces due to their mutual gravitational interactions. (a) Draw a free body diagram for the meteoroid at the origin. (b Find the magnitude of each force on the meteoroid at the origin. (c Find the net force (magnitude and direction) on the meteoroid at the origin