A rigid body consists of a \( 3 \mathrm{~kg} \) mass connected to a \( 2 \mathrm{~kg} \) mass by...
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A rigid body consists of a \( 3 \mathrm{~kg} \) mass connected to a \( 2 \mathrm{~kg} \) mass by a massless rod. The \( 3 \mathrm{~kg} \) mass is located at \( \vec{\eta}=(2 \hat{i}+5 \hat{j}) \mathrm{m} \) and \( 2 \mathrm{~kg} \) mass at \( \overrightarrow{r_{2}}=(4 \hat{i}+2 \hat{j}) \mathrm{m} \). Find: (a) the length of the rod and \( (b) \) the coordinates of the centre of mass.
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