Hey there! Sign in to join this conversationNew here? Join for free

mechanics help? (newton's shell theorem) Watch

Announcements
    • Thread Starter
    Offline

    15
    ReputationRep:
    hi so i'm stuck on part c of this question, it's not related to the other questions so i only screenshotted part c.

    I just can't understand how the theorem can be applied to a scenario involving the earth as the earth isn't a hollow shell?

    Name:  Screen Shot 2016-10-09 at 13.39.23.png
Views: 29
Size:  87.9 KB
    • TSR Support Team
    • Clearing and Applications Advisor
    Offline

    21
    ReputationRep:
    (Original post by Alex621)
    hi so i'm stuck on part c of this question, it's not related to the other questions so i only screenshotted part c.

    I just can't understand how the theorem can be applied to a scenario involving the earth as the earth isn't a hollow shell?

    Name:  Screen Shot 2016-10-09 at 13.39.23.png
Views: 29
Size:  87.9 KB
    You can consider the earth to be made up of an infinite number of hollow spherical shells though and since they all have the centre at the exact same point, you can model the entire mass as being concentrated there.
 
 
 
  • 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
    Break up or unrequited love?
  • 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.