What is the horizontal distance between support X and the centre of mass of the tool cart when the girder just begins to tip?
1.25 m1.25\text{ m}1.25 m
3.00 m3.00\text{ m}3.00 m
4.25 m4.25\text{ m}4.25 m
4.75 m4.75\text{ m}4.75 m
