Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    2
    ReputationRep:
    Hi, struggling a little bit with this question:
    Name:  sasa.png
Views: 104
Size:  56.2 KB

    My working so far:
    Name:  20150107_235239.jpg
Views: 101
Size:  493.9 KB

    I'm mostly struggling to understand the concept of the reaction at B, could someone please explain?
    Offline

    19
    ReputationRep:
    (Original post by Antheran)
    Hi, struggling a little bit with this question:
    Name:  sasa.png
Views: 104
Size:  56.2 KB

    My working so far:
    Name:  20150107_235239.jpg
Views: 101
Size:  493.9 KB

    I'm mostly struggling to understand the concept of the reaction at B, could someone please explain?
    I do not understand in the picture the 10kNm at the end
    do you have a 2KN force applied and a clockwise couple of 10KNm acting on top of the force?
    • Thread Starter
    Offline

    2
    ReputationRep:
    I'd assume that it's a clockwise moment acting on on top of the 2Kn force. Not sure why you're calling it a couple though?
    Offline

    19
    ReputationRep:
    (Original post by Antheran)
    I'd assume that it's a clockwise moment acting on on top of the 2Kn force. Not sure why you're calling it a couple though?
    assuming there is nothing else connected to the lever...

    the reaction at the joint is a force that the joint is "feeing".
    Imagine this level was in contact with the ground at the joint how hard it would be pressing there.
    Are you ok with the calculations?
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by TeeEm)
    assuming there is nothing else connected to the lever...

    the reaction at the joint is a force that the joint is "feeing".
    Imagine this level was in contact with the ground at the joint how hard it would be pressing there.
    Are you ok with the calculations?
    I've posted a photo of my calculations, still not getting what you're trying to say. I'm mostly struggling with the concept of the reaction at B, I'm doing it as if it was at a 45 angle to the whole structure, but it's also at a 30 degrees angle? Not really getting the concept although it's probably very straight forward. Care to explain it a little bit more please?
    Offline

    19
    ReputationRep:
    (Original post by Antheran)
    I've posted a photo of my calculations, still not getting what you're trying to say. I'm mostly struggling with the concept of the reaction at B, I'm doing it as if it was at a 45 angle to the whole structure, but it's also at a 30 degrees angle? Not really getting the concept although it's probably very straight forward. Care to explain it a little bit more please?
    firstrly taking moments about A should give you 16 KN force at B
    Offline

    19
    ReputationRep:
    then take moments about the far end point of the linkage


    this will find you the vertical component of the reaction at B, acts vertically up at B
    the horizontal component of the reaction has no moment
 
 
 
Poll
Who is your favourite TV detective?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.