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

    16
    ReputationRep:
    Name:  1464738302983434130295.jpg
Views: 92
Size:  309.2 KB hi for part c of this question when I consider the truck on its own I get a different answer( wrong answer) but when I consider the whole system , I got it right. The mark scheme does show two methods but I don't get what has gone wrong when I just consider the truck Attachment 541421541423 I am taking forward as my positive direction since the thrust also acts forward , it's positive. What has gone wrong ? Thanks.
    Attached Images
     
    Offline

    2
    ReputationRep:
    (Original post by coconut64)
    Name:  1464738302983434130295.jpg
Views: 92
Size:  309.2 KB hi for part c of this question when I consider the truck on its own I get a different answer( wrong answer) but when I consider the whole system , I got it right. The mark scheme does show two methods but I don't get what has gone wrong when I just consider the truck Attachment 541421541423 I am taking forward as my positive direction since the thrust also acts forward , it's positive. What has gone wrong ? Thanks.
    Thrust is 517 but the horizontal component is .9T
    • Thread Starter
    Offline

    16
    ReputationRep:
    (Original post by Middriver)
    Thrust is 517 but the horizontal component is .9T
    Where does .9 t come from? Thanks.
    Offline

    14
    ReputationRep:
    0.9T=T\cos(\theta)
    (Original post by coconut64)
    Where does .9 t come from? Thanks.
    • Thread Starter
    Offline

    16
    ReputationRep:
    (Original post by Cryptokyo)
    0.9T=T\cos(\theta)
    But tension becomes thrust at this point though... Thanks.
 
 
 
Poll
Do you agree with the PM's proposal to cut tuition fees for some courses?
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.