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Grade upto college level Mechanics

Three thin rods each of length L are arranged in an inverted U, as shown in Fig. The two rods on the arms of the U each have mass M; the third rod has mass 3M. Where is the center of mass of the assembly?
height=139

Profile image of Amit Saxena
11 Years agoGrade upto college level
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1 Answer

Profile image of Navjyot Kalra
11 Years ago
232-1706_1.PNG
The negative sign highlights the fact that the point is in the downward direction relative to origin.
Therefore, the y coordinate of center of mass of system is located at \frac{L}{5}.