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

# M1 gold paper 5 watch

1. https://2802a3b1a650824d2586fd3336bd...%20Edexcel.pdf

question 4 not sure where to start please talk me through how i would go about answering that question
2. (Original post by Big white)
https://2802a3b1a650824d2586fd3336bd...%20Edexcel.pdf

question 4 not sure where to start please talk me through how i would go about answering that question
if its parallel to i-2j then you know its going in the same direction as that, so use i-2j for part a

use tan =0/a to find that angle and add 90 to find the angle it makes with j
3. (Original post by Big white)
https://2802a3b1a650824d2586fd3336bd...%20Edexcel.pdf

question 4 not sure where to start please talk me through how i would go about answering that question
For 4a you can essentially treat the resultant force as the vector and then find the angle between it and the vector .

For 4b you split each into their respective components and then form 2 simultaneous equations. I.e. let R be of the form . Hence and . Then you can solve that from there.

For 4c use value for q given to find p. Then find the magnitude of the resultant force. Then use equation F=ma
4. (Original post by KloppOClock)
if its parallel to i-2j then you know its going in the same direction as that, so use i-2j for part a

use tan =0/a to find that angle and add 90 to find the angle it makes with j
ok but how do i find R ? apart from the fact like you said which is that it's a scalar multiple I'm not really sure what i can work out
5. (Original post by Big white)
ok but how do i find R ? apart from the fact like you said which is that it's a scalar multiple I'm not really sure what i can work out
For 4a you can essentially treat the resultant force as the vector and then find the angle between it and the vector .

For 4b you split each into their respective components and then form 2 simultaneous equations. I.e. let R be of the form . Hence and . Then you can solve that from there.

For 4c use value for q given to find p. Then find the magnitude of the resultant force. Then use equation F=ma
6. (Original post by Big white)
ok but how do i find R ? apart from the fact like you said which is that it's a scalar multiple I'm not really sure what i can work out
for part a you dont need to, R and i-2j are going in the same direction so they make the same angle with J
7. (Original post by KloppOClock)
for part a you dont need to, R and i-2j are going in the same direction so they make the same angle with J
Thanks
(Original post by Cryptokyo)
For 4a you can essentially treat the resultant force as the vector and then find the angle between it and the vector .

For 4b you split each into their respective components and then form 2 simultaneous equations. I.e. let R be of the form . Hence and . Then you can solve that from there.

For 4c use value for q given to find p. Then find the magnitude of the resultant force. Then use equation F=ma
I see is that because any scalar multiple will still give the same answer?so tan theta=2/1 got it.
Understood part b
But you might need to do some working out and show me to way for c because although i understand what you're saying i'm not sure how to apply it
8. (Original post by Big white)
Thanks

I see is that because any scalar multiple will still give the same answer?so tan theta=2/1 got it.
Understood part b
But you might need to do some working out and show me to way for c because although i understand what you're saying i'm not sure how to apply it
9. (Original post by KloppOClock)
Ah so find vector of resultant then find magnitude and use f=ma got it thanks so much hopefully if this comes up on M1 then i can do it xD
10. (Original post by Big white)
Ah so find vector of resultant then find magnitude and use f=ma got it thanks so much hopefully if this comes up on M1 then i can do it xD
i hope so too

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: June 7, 2016
Today on TSR

### I've studied the wrong subject

...Should I go back to school?

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