# Homework Help: Physic: Help with solving roller support

1. Jul 16, 2007

### hserse

Can someone help explain the idea behind solving this roller support question. I have the answer, couldn't figure how to solve it. I would greatly appreciate the detail explanation...

#### Attached Files:

• ###### Truss Support.jpg
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4.2 KB
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140
2. Jul 16, 2007

### Staff: Mentor

First, you need to show us your work in order for us to help you. Second, the figure is a bit low-resolution. Can you post a higher-resolution copy?

3. Jul 16, 2007

### hserse

Berkeman,
That is main reason I'm posting this, I have the answer (750N), but I wanted how they come up with it. It's answer in one of the review booklet an EIT exam, which didn't provide explanation. Sorry about the low resolution, here's the another one.

#### Attached Files:

• ###### Truss.JPG
File size:
25.9 KB
Views:
131
4. Jul 17, 2007

### PhanthomJay

You should show some attempt at your work. You should consider splitting the loading into two pieces: a uniformly distributed load of 100N/m, and a triangularly distributed load varying from 0 to 100N/m. Determine the reactions for each case and superimpose the results.

5. Jul 17, 2007

### FredGarvin

Along the lines of what PhantomJay mentioned, you should break this down into two problems...The first has a distributed load of 100 N/m and the other has the varying distributed load. Take both distributed loads and convert them to a point load at the geometric center. Then you have a single load in each. Then it's statics as usual.