Diagram (a) shows a side view of a kitchen wall cupboard. Its lower edge rests against the wall at A. It is fastened by screws at a height h vertically above A. The mass of the cupboard is 10 kg and its
centre of gravity is 0.15 m from the wall.

Calculate the value of force X when h = 0.60 m.

In principle the fixing screws could be positioned anywhere between point A and the top of the
cupboard. Sketch a graph to show how the size of force X would depend on h for values of h from
zero up to 0.60 m.