x Turn on thread page Beta
 You are Here: Home >< Maths

# 2003 Jan M1 Q5 Help Needed Please watch

1. Attachment 203763

This is what i've got so far:

R(↖): R = 1.5gCos(30) - TSin(20)
R(↗): F = TCos(20) - 1.5gSin(30)

Is this correct and if so where do i go next? Thanks.
2. (Original post by Robert Green)
Attachment 203763

This is what i've got so far:

R(↖): R = 1.5gCos(30) - TSin(20)
R(↗): F = TCos(20) - 1.5gSin(30)

Is this correct and if so where do i go next? Thanks.
Your attachment appears not to be working.
3. (Original post by joostan)
You're attachment appears not to be working.
Oh sorry...

4. (Original post by Robert Green)
Oh sorry...

FMax = uR at limiting equilibrium.
u = 1/3
See what you can do from here.
Hint: Eliminate either F or R.
5. (Original post by joostan)
FMax = uR at limiting equilibrium.
u = 1/3
See what you can do from here.
To get F i multiplied R by 1/3 and ended up with...

1/3(1.5gCos30 - TSin20)

I then said that 1/3(1.5gCos30 - TSin20) = TCos20 - 1.5gSin30

Is that correct?
6. (Original post by Robert Green)
To get F i multiplied R by 1/3 and ended up with...

1/3(1.5gCos30 - TSin20)

I then said that 1/3(1.5gCos30 - TSin20) = TCos20 - 1.5gSin30

Is that correct?
Yes

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: March 20, 2013
Today on TSR

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams