Solving Distributed Load Homework: Reaction Forces at A and B

Click For Summary

Homework Help Overview

The discussion revolves around calculating the reaction forces at points A and B for a beam subjected to a distributed load. Participants are analyzing the application of moments and areas in the context of structural mechanics.

Discussion Character

  • Exploratory, Assumption checking, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the calculation of the area of the load and its implications for determining reaction forces. There are attempts to apply the moment equilibrium equations, with some questioning the accuracy of the initial calculations.

Discussion Status

The discussion is ongoing, with participants identifying errors in the calculations and clarifying the correct values to use. There is an acknowledgment of a mistake in the moment calculation, leading to a revised understanding of the reaction force at B.

Contextual Notes

Participants are also questioning the meaning of specific notations in the problem setup, indicating a need for clarification on the diagram provided.

Air
Messages
202
Reaction score
0

Homework Statement


To find the reaction at A and B. (See image below)
DistributedLoad.jpg



Homework Equations


Moments and Area


The Attempt at a Solution


Area of load: (0.3)(6) = 1.8kN
Moments about A: -(6)(0.15) + RB(0.6) = 0 --> RB = 1.5kN


4. The error and question
I get the reaction force at B to be 1.5kN but the answer states that it is 0.45kN. What am I doing wrong?
 
Physics news on Phys.org
"-(6)(0.15) " is wrong.
 
Oh yes. It's -(1.8)(0.5). Found 1.8 in the step earlier and forgot to put that in. Thanks.
 
Also, what is that dot they have in the bar mean? At point A.
 

Similar threads

  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 6 ·
Replies
6
Views
3K
Replies
3
Views
5K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 2 ·
Replies
2
Views
3K
Replies
3
Views
4K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K