A test object of mass mest is placed at the origin of a two- dimensional coordinate system (Figure 1). An object 1, of mass m = 7mtest, is at (-d, l), and an object 2, of mass m = 2mtest is at (d, 0). Figure m d miest d < 1 of 1 > m Part A What is the magnitude of the vector sum of the gravitational forces exerted on the test object by the other two objects? 70 7d p = Gm ( (+2) + ((2 729737) O FG 1 2 V (d +1) /2 O FG-Gmest OFG =Gmest 1 O FG = Gmest 2 70 ( 12/23 (/3+ (23) + (7) 7d 3/2 Submit < Return to Assignment ( 2 Request Answer 2 7d 76 () + ((162) +1)/2 3/2 7d d (d+1)3/2 Provide Feedback + 70 (d +1) 3/2 2