Practice question
Question
A uniform rod of length 2m and mass 4kg lies along the x-axis with its left end at the origin. What is the position vector of its center of mass?
Explanation
For a uniform rod, the center of mass is at its geometric center. Length = 2m, so the center is at 1m from the origin along the x-axis. Position vector: R = 1i^+0j^+0k^ = 1i^m.
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