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A rigid body consists of a 3 kg mass con...

A rigid body consists of a `3 kg` mass connected to a `2 kg` mass by a massless rod. The `3 kg` mass is located at `vec(r )_(1) = (2hat(i) + 5hat(j))m` and the `2 kg` mass at `vec(r )_(2) = (4hat(i) + 2hat(j))m`. Find the length of rod and the coordinates of the centre of mass.

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