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

    6
    ReputationRep:
    https://ca99c64778b62ba7e7b339967029...%20Edexcel.pdf



    Hi, why is there no resultant force at B when there is a mass over there, thanks in advance
    Offline

    2
    ReputationRep:
    I'm assuming you mean part a) ?

    The mass at B must be considered to get the result required, by taking moments about A.

    The only reason the Mass at B will be ignored is if you take moments about B.

    If I haven't answered your question, please be more specific.
    • Thread Starter
    Offline

    6
    ReputationRep:
    I am talking about part a, but shouldnt there be a resultant going upwards at B due to the mass?
    • Thread Starter
    Offline

    6
    ReputationRep:
    the contact force*
    • Thread Starter
    Offline

    6
    ReputationRep:
    I don't understand why there isnt a contact force where there is a particle at B
    Offline

    2
    ReputationRep:
    (Original post by James_pa)
    I don't understand why there isnt a contact force where there is a particle at B
    The rod is hinged at A, so the rod isn't producing any kind of resistance to the particle because it isn't fixed still - such as is frequent in M1 statics questions.

    The particle is also fixed to the rod, so effectively it and the rod become one system.

    It's tough to explain, if you need a better explanation I'll try my best.
    • Thread Starter
    Offline

    6
    ReputationRep:
    ok, thanks i sort of understand it
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    Brussels sprouts
    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
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • 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

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