# Math Help - Help in Application of integration.

1. ## Help in Application of integration.

Hello,
Can anyone check if my answer for part (a) is correct and help me out for part (b)?

Below is the question and answers :.

Thanx you very much..

2. That looks correct. You could simplify the result a bit, to write it in the form $y=\frac{W}{24EI}(3lx^2-2x^3-l^3)$.

For (b), the maximum deflection occurs when x=0. So just put x=0 in the answer to (a).

3. yeah but what to do with the value of E,I and W?
where do i get them please?
thx

4. Originally Posted by NiCeBoY
yeah but what to do with the value of E,I and W?
where do i get them please?
thx
You dont get them
You leave them as it is... The answer is supposed to be in terms of them

5. oh ...
i thought we need to remove W because it is said in the question that we should neglect the weight of the beam.

so the answer for the second part is :
$
y=-\frac{WL^3}{24EI}
$

This is the final answer yeah?

Thanks

6. Originally Posted by NiCeBoY
so the answer for the second part is :
$
y=-\frac{WL^3}{24EI}
$

This is the final answer yeah?

Thanks
Yes! They said "neglect the weight of beam" not the weight of the load

7. ah thanks bro.