A crane consists of a quarter -circular bar that lies in a plane parallel to the xz plane with a low -friction
collar
A crane consists of a quarter-circular bar that lies in a plane parallel to the xz plane with a low-friction collar
A crane consists of a quarter
-
circular bar that lies in a plane parallel to the xz plane with a low
friction
A crane consists of a quarter-circular bar that lies in a plane parallel to the xz plane with a low-friction