Question

8. In the figure, four point masses, mi-8.0 kg, m2 2.0 kg, m-4.0kg, and m as shown. The r and y coordinates of the center of mass are closest to 5.0kg, are placed A) (2.2 m, 2.6 m). B) (2.2 m, 2.7 m). C) (2.3 m, 3.1 m). D) (2.2 m, 2.8 m). E) (2.3 m, 2.9 m). 30m 20 m amig 5.0kp 10 2okg 20m

Answer 1

11)
  Non uniform stick, the mark should move to 50cm from 51 cm, if the mass 8 gm, is placed at a distance less than 50 cm.
From the balance of torques, we get
   
51m1 497712

And
  for the 2nd case,
  $50m_1'+8x=50m_2'$