For a Simply-Supported $4.0 \mathrm{~m}$ Beam Carrying a Uniform Load Of $3.5 \mathrm{~N} / \mathrm{m}$

Short Answer

For a simply-supported $4.0 \mathrm{~m}$ beam carrying a uniform load of $3.5 \mathrm{~N} / \mathrm{m}$ , the deflection at $x$ metres is given by $y=\frac{3.5}{24 k}\left(4.0^{3} x-8.0 x^{3}+x^{4}\right)$ , where $k$ is a constant. If $k=41000000$ , what is the deflection at $1.2 \mathrm{~m} ?$