You are Here: Home >< Maths

# M1 Moments Watch

1. (Original post by Steelmeat)
How do i do part C?
Find the tension in terms of k and then set T > 0 and solve for k.
2. (Original post by Zacken)
Find the tension in terms of k and then set T > 0 and solve for k.
I don't understand how i would do that?

currently for part b i have the expression

not sure where to go from there
3. (Original post by Steelmeat)
I don't understand how i would do that?

currently for part b i have the expression

not sure where to go from there
What on earth is ?

Anyways... I get in (b).
4. (Original post by Zacken)
What on earth is ?

Anyways... I get in (b).
sorry i made a mistake, i was supposed to make it captial

but yea uu got the same thing as me written in a different form....
5. (Original post by Steelmeat)
sorry i made a mistake, i was supposed to make it captial

but yea uu got the same thing as me written in a different form....
Right, so make that >0 and solve for k.
6. (Original post by Zacken)
Right, so make that >0 and solve for k.
hmmm do i just say then

7. (Original post by Steelmeat)
hmmm do i just say then

Now solve for :

8. (Original post by Zacken)
Now solve for :

so ?
9. (Original post by Steelmeat)
so ?
Yeah.
10. (Original post by Zacken)
Yeah.
ah thanks again
11. (Original post by Steelmeat)
ah thanks again
Sure.
12. how is part C done in this???!!! I'm stuck on it
13. (Original post by Steelmeat)
I don't understand how i would do that?

currently for part b i have the expression

not sure where to go from there
(Original post by Zacken)
What on earth is ?

Anyways... I get in (b).
(Original post by Steelmeat)
hmmm do i just say then

^^ do everything above do part B and find an expression for T in terms of everything else
the set the big half of the expression >0 then solve for k
(Original post by pondsteps)
how is part C done in this???!!! I'm stuck on it
14. (Original post by pondsteps)
how is part C done in this???!!! I'm stuck on it
15. (Original post by Steelmeat)
I don't understand how i would do that?

currently for part b i have the expression

not sure where to go from there
is it right if we kept the expression in this form?
16. (Original post by poundsoffat)
^^ do everything above do part B and find an expression for T in terms of everything else
the set the big half of the expression >0 then solve for k
why do we set it to > 0
17. (Original post by pondsteps)
is it right if we kept the expression in this form?
yes it's fine Zacken's format or Steelmeat's format are both fine

(Original post by pondsteps)
why do we set it to > 0
well if k=0 it doesn't have a value xD
if k<0 then k is negative which you don't want
18. (Original post by pondsteps)
why do we set it to > 0
That's the definition of something being taut, it's tension is greater than 0. You should brush up your mechanical concepts.
19. (Original post by Zacken)
That's the definition of something being taut, it's tension is greater than 0. You should brush up your mechanical concepts.
ohh okay thanks. if its slack then the tension = 0 ?
20. (Original post by pondsteps)
ohh okay thanks. if its slack then the tension = 0 ?
Yeah.

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: May 31, 2016
Today on TSR

### Does race play a role in Oxbridge admissions?

Or does it play no part?

### The worst opinion about food you'll ever hear

Discussions on TSR

• Latest
• ## 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
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

## Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest
• ## 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

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.