Answer:
224.8125 N
Explanation:
Using the attached diagram, then we can work the answer as follows
Taking moments about 275 mm from point A
[tex]P\times 1500=\frac {mg}{2}\times 275mm[/tex]
Where m is the mass, P is the load, g is acceleration due to gravity
[tex]P=\frac {250\times 9.81\times 275mm}{2\times 1500mm}=224.8125 N[/tex]