You are Here: Home >< Maths

# Help with M1 question

Announcements Posted on
TSR's new app is coming! Sign up here to try it first >> 17-10-2016
1. A brick that is modeled as a particle of mass m kg sits on a smooth slope of angle 60 degrees to the horizontal, it is held at rest by a light in-extensible string parallel to the slope that is fixed at point A at the top of the slope. The tension in the string is 8N.

a) Find the mass of the particle, give your answers to 3 s.f.
b) Find the size of the reaction force between the particle and the slope force, give your answer to 3 s.f.

I've drawn and labelled the force diagram, what equations do I need to rearrange for part a and b?
Attached Images

2. For part a, resolve forces parallel to the plane: 8=mgsin60
for part b, sub in your value for mass into an equation resolving forces perpendicular to the plane: Reaction force=mgcos60
3. (Original post by Mfp3343)
For part a, resolve forces parallel to the plane: 8=mgsin60
for part b, sub in your value for mass into an equation resolving forces perpendicular to the plane: Reaction force=mgcos60
Thanks

## 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
your full birthday is required
1. Oops, you need to agree to our Ts&Cs to register

Updated: October 11, 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

## Make your revision easier

### 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

Can you help? Study help unanswered threads

## Groups associated with this forum:

View associated groups
Study resources

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.