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2. A rod 8 meters long has linear density that is a linear function. If the linear density on one end is 6 kg/m and

2. A rod 8 meters long has linear density that is a linear function. If the linear density on one end is 6 kg/m and on the the other end the linear density is 3 kg/m, find the center of mass of the rod.

3. The length of a rod is 2 meters and the total mass is 14 kg. The linear density varies directly to the square of the distance from one end to a point x. Find (2/3).

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