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Q1 – The centre of gravity of an object is the point where that object will balance. It is the point where the whole mass is concentrated.
Q2 – Objects with a uniform shape possess a lifting problem if the centre of gravity lies at the centre of the object.
Q3 – With oddly shaped objects the centre of gravity will be difficult to determine, and the rigger may have to guess where the centre of gravity lies.
Q4 – When lifting a load where the centre of gravity is not easily estimated, it may start to tilt or if the load wants to topple over. Immediately stop lifting and reposition the slings