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**size** a simply supported beam of a span 8.0m carriers a design load of 30kN/m.

a)write an expression for the bending moment, M, at a section which is at a distance of x from a support

b)Express the engineers bending eqaution as a differential equation relating the vertical deflection, y, of the beam to the bending moment at x.

c)obtain the particular soultion of this equation.

i could do with some help especially part b and c

for the expression i have:

Mx = 120-10x/2

Mx= 120x-5x sqaured this may not be correct.

any help be great thank you