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

    3
    ReputationRep:
    I'm a bit confused on how to solve part d - it seems to me like there's not enough information to do this? Not sure where to begin on that one. Name:  ImageUploadedByStudent Room1459627858.993294.jpg
Views: 60
Size:  163.4 KB




    Posted from TSR Mobile
    Offline

    20
    ReputationRep:
    (Original post by goodwinning)
    I'm a bit confused on how to solve part d - it seems to me like there's not enough information to do this? Not sure where to begin on that one. Name:  ImageUploadedByStudent Room1459627858.993294.jpg
Views: 60
Size:  163.4 KB




    Posted from TSR Mobile
    you've got mass and velocity of the train - which can give you KE
    then you can equate the KE of the moving train to the work done by the buffer
    • Aston Villa FC Supporter
    Offline

    3
    ReputationRep:
    Aston Villa FC Supporter
    (Original post by goodwinning)
    I'm a bit confused on how to solve part d - it seems to me like there's not enough information to do this? Not sure where to begin on that one. Name:  ImageUploadedByStudent Room1459627858.993294.jpg
Views: 60
Size:  163.4 KB




    Posted from TSR Mobile

    The buffers seem to be springs

    In which case F = kx (remember that as F = Kyx. But y?)
    Offline

    20
    ReputationRep:
    (Original post by Kyx)
    The buffers seem to be springs

    In which case F = kx (remember that as F = Kyx. But y?)
    Be careful what you suppose under exam conditions - the question says the force is constant while the buffers are being compressed, but with a simple spring system obeying Hooke's law the force varies with the amount of compression.
    • Thread Starter
    Offline

    3
    ReputationRep:
    (Original post by Kyx)
    The buffers seem to be springs

    In which case F = kx (remember that as F = Kyx. But y?)
    That's what I was stuck on because I initially thought you'd have to use this.


    Posted from TSR Mobile
 
 
 
  • 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
    What's your favourite Christmas sweets?
  • 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.