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The point masses and be located at and .
Find the center of mass of the point of masses lying on the -axis.
Moments and Center of mass: One dimensional system :
Let the point masses be located at .
1. The moment about the origin is .
2. The center of mass is , where is the total mass of the system.
Find .
Substitute , , and in .
.
Total mass of the system is .
Substitute and in .
.
The center of mass is .
The center of mass is .
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