Turn on thread page Beta
    • Thread Starter
    Offline

    2
    ReputationRep:
    Name:  Screen Shot 2016-03-04 at 23.35.50.png
Views: 149
Size:  267.4 KB


    This question is confusing me, I've tried the method of joining the lines of action but I end up with " 2.5mg = 4tan(ø) x F " , which obviously doesn't lead to F = 25/32mg. I've looked at the solution bank and understand how they've done it, but I don't understand why the way I'm doing it is giving me the wrong answer

    Any help would be greatly appreciated
    Offline

    19
    ReputationRep:
    (Original post by d14m)
    Name:  Screen Shot 2016-03-04 at 23.35.50.png
Views: 149
Size:  267.4 KB


    This question is confusing me, I've tried the method of joining the lines of action but I end up with " 2.5mg = 4tan(ø) x F " , which obviously doesn't lead to F = 25/32mg. I've looked at the solution bank and understand how they've done it, but I don't understand why the way I'm doing it is giving me the wrong answer

    Any help would be greatly appreciated
    it will be better if you post a photo of your workings
    Offline

    19
    ReputationRep:
    I will be signing off now but I will tag one of the best of the room

    Zacken
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by TeeEm)
    it will be better if you post a photo of your workings
    Name:  Screen Shot 2016-03-04 at 23.46.32.png
Views: 98
Size:  265.6 KB
    I thought the solution was something along these lines :confused:
    Offline

    12
    ReputationRep:
    (Original post by d14m)
    Name:  Screen Shot 2016-03-04 at 23.35.50.png
Views: 149
Size:  267.4 KB


    This question is confusing me, I've tried the method of joining the lines of action but I end up with " 2.5mg = 4tan(ø) x F " , which obviously doesn't lead to F = 25/32mg. I've looked at the solution bank and understand how they've done it, but I don't understand why the way I'm doing it is giving me the wrong answer

    Any help would be greatly appreciated
    Where did you find this question? I got F=25mg/72.
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by AlmostNotable)
    Where did you find this question? I got F=25mg/72.
    It's in the M2 edexcel textbook, mixed exercise 5E


    Posted from TSR Mobile
    • Thread Starter
    Offline

    2
    ReputationRep:
    Question 5 IIRC


    Posted from TSR Mobile
    Offline

    12
    ReputationRep:
    (Original post by d14m)
    Name:  Screen Shot 2016-03-04 at 23.35.50.png
Views: 149
Size:  267.4 KB


    This question is confusing me, I've tried the method of joining the lines of action but I end up with " 2.5mg = 4tan(ø) x F " , which obviously doesn't lead to F = 25/32mg. I've looked at the solution bank and understand how they've done it, but I don't understand why the way I'm doing it is giving me the wrong answer

    Any help would be greatly appreciated
    Have you tried resolving and taking moments instead of a geometrical approach?


    Posted from TSR Mobile
    Offline

    12
    ReputationRep:
    (Original post by d14m)
    It's in the M2 edexcel textbook, mixed exercise 5E


    Posted from TSR Mobile
    Book is wrong. It is 25mg/72.
    • Thread Starter
    Offline

    2
    ReputationRep:
    Oh wow, thanks for your help. I can't tell you how long I spent trying to figure out where I went wrong. Any other mistakes in statics?


    Posted from TSR Mobile
    Offline

    12
    ReputationRep:
    (Original post by d14m)
    Oh wow, thanks for your help. I can't tell you how long I spent trying to figure out where I went wrong. Any other mistakes in statics?


    Posted from TSR Mobile
    Quite a few if I recall. The M2 book is riddle with mistakes. Here's a PDF that might help you.
    Attached Images
  1. File Type: pdf M2 Errors.pdf (181.2 KB, 341 views)
    • Thread Starter
    Offline

    2
    ReputationRep:
    Thanks for this Self studying the module so this was desperately needed
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: March 5, 2016

University open days

  1. University of Bradford
    University-wide Postgraduate
    Wed, 25 Jul '18
  2. University of Buckingham
    Psychology Taster Tutorial Undergraduate
    Wed, 25 Jul '18
  3. Bournemouth University
    Clearing Campus Visit Undergraduate
    Wed, 1 Aug '18
Poll
How are you feeling in the run-up to Results Day 2018?
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.