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

    10
    ReputationRep:

    Any help on part a? Cheers
    Online

    19
    ReputationRep:
    (Original post by Edgemaster)

    Any help on part a? Cheers
    Do you get given T=2π sqrt(m/k) in your formula sheet?
    • Thread Starter
    Offline

    10
    ReputationRep:
    (Original post by Joinedup)
    Do you get given T=2π sqrt(m/k) in your formula sheet?
    Unfortunately no.


    These are all the SHM/wave related equations we get. At least the ones we've used.
    Offline

    17
    ReputationRep:
    (Original post by Edgemaster)

    Any help on part a? Cheers
    Maybe work out spring constant using f=kx and f=mg.

    Are u familiar with the formula joinedup used? Is it a formula u know but is not on formula sheet?
    Posted on the TSR App. Download from Apple or Google Play
    Offline

    17
    ReputationRep:
    Also remember the restoring force is equal to kx.

    So ma=-kx as the restoring force acts in opposite direction to displacement.

    So a=-(kx)/m and a=-w^2x we can equate these to eliminate x and find expressions for the frequency and time period of an oscillating mass spring system.
    Posted on the TSR App. Download from Apple or Google Play
    • Thread Starter
    Offline

    10
    ReputationRep:
    (Original post by Shaanv)
    Also remember the restoring force is equal to kx.

    So ma=-kx as the restoring force acts in opposite direction to displacement.

    So a=-(kx)/m and a=-w^2x we can equate these to eliminate x and find expressions for the frequency and time period of an oscillating mass spring system.
    But where can I obtain k?
    Offline

    17
    ReputationRep:
    (Original post by Edgemaster)
    But where can I obtain k?
    When the spring is in equilibrium the force on the spring is equal and opposite to its weight so kx=mg when the mass spring system is in equilibrium.
    Posted on the TSR App. Download from Apple or Google Play
    • Thread Starter
    Offline

    10
    ReputationRep:
    (Original post by Shaanv)
    When the spring is in equilibrium the force on the spring is equal and opposite to its weight so kx=mg when the mass spring system is in equilibrium.
    I see. Makes total sense to me now. Thanks.
 
 
 
  • 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 newspaper do you read/prefer?
  • 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.