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Unformatted text preview: mata (jpm2873) HW #8 Antoniewicz (57420) 1 This printout should have 17 questions. Multiplechoice questions may continue on the next column or page find all choices before answering. 001 10.0 points Three particles are placed in the xy plane. A m 1 = 71 g particle is located at ( x 1 , y 1 ), where x 1 = 4 m and y 1 = 5 . 6 m and a m 2 = 71 g particle is located at ( x 2 , y 2 ), where x 2 = 2 m and y 2 = 3 . 8 m. What must be the x coordinate of the m 3 = 15 g particle so that the center of mass of the threeparticle system is at the origin? Answer in units of m. 002 (part 1 of 2) 5.0 points A square plate is produced by welding to gether four smaller square plates, each of side a . The weight of each of the four plates is shown in the figure. x y 20 N 10 N 80 N 30 N (0 , 0) (2 a, 0) (0 , 2 a ) (2 a, 2 a ) Find the xcoordinate of the center of grav ity (as a multiple of a ). Answer in units of a . 003 (part 2 of 2) 5.0 points Find the ycoordinate of the center of gravity (as a multiple of a ). Answer in units of a . 004 (part 1 of 2) 5.0 points A(n) 3 . 8 kg object moving with a speed of 6 . 8 m / s collides with a(n) 3 . 6 kg object mov ing with a velocity of 10 . 4 m / s in a direction 61 . 7788 from the initial direction of motion of the 3 . 8 kg object.8 kg object....
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 Spring '08
 Turner
 Physics

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