You are Here: Home >< Maths

# M3 Vertical circles

Announcements Posted on
TSR's new app is coming! Sign up here to try it first >> 17-10-2016
Mass is attached to one end of a rod and other end centre of circle.
Rod turns an angle theta from the bottom of the circle.

So if the circle has ... never mind I got it.
2. (Original post by AlmostNotable)
Mass is attached to one end of a rod and other end centre of circle.
Rod turns an angle theta from the bottom of the circle.

Resolving to find Tension I can get Tcos(theta)=mg and T=mgcos(theta)

Which is right and why?
I can't quite get what you're asking, but:

Means that if you resolve radially inwards, you get: where is the centripetal force.
3. (Original post by Zacken)
I can't quite get what you're asking, but:

Means that if you resolve radially inwards, you get: where is the centripetal force.
Do we need to know how to find escape velocity for M3?
4. (Original post by AlmostNotable)
Do we need to know how to find escape velocity for M3?
Nope.
5. Whut...?

Edit: Seems you got it
6. (Original post by Zacken)
Nope.
Why did I revise that then?
7. (Original post by AlmostNotable)
Why did I revise that then?
I dunno, you need to know it for U5 Edexcel physics.

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: May 17, 2016
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:
Today on TSR

### How does exam reform affect you?

From GCSE to A level, it's all changing

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read here first

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams