Perfect Fisdas
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1. Because g varies so little over the extent of most structures, any structure's center of gravity effectively coincides with its center of mass. Here is a fictitious example where g varies more significantly. Figure 12-23 shows an array of six particles, each with mass m, fixed to the edge of a rigid structure of negligible mass. The distance between adjacent particles along th e edge is 2.00 m. The following table gives the value of g (m/s2) at each particle's location. Using the coordinate system shown, find (a) the x coordinate X com and (b) the Y coordinate Yeom of the center of mass of the six- particle system. Then find (c) the x coordinate X cog and (d) the Y coordinate Y cog of the center of gravity of the six-particle system. Jawab : 1. A. x com = = = 1 m B. y com = = = 2 m C. x cog = = = = 0.987 m D. y cog = = = = 1.97 m
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