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# Resolving forces question Watch

1. https://e4c57ffe72e64565dd23ce74ff8c.../Resolving.pdf

I don't understand part b (ii) of the first question. How would you draw the force diagram and which is the resultant force when F is vertical? Every time I try to draw it, I end up getting the wrong answer because I use Tan(theta) = Opp/Aj but according to the mark scheme, you should use Cos(theta) = Adj/Hyp.... but I don't understand why.
2. (Original post by jessyjellytot14)
https://e4c57ffe72e64565dd23ce74ff8c.../Resolving.pdf

I don't understand part b (ii) of the first question. How would you draw the force diagram and which is the resultant force when F is vertical? Every time I try to draw it, I end up getting the wrong answer because I use Tan(theta) = Opp/Aj but according to the mark scheme, you should use Cos(theta) = Adj/Hyp.... but I don't understand why.
You're talking about b(ii), that's just resolving the tension vertically. There's a degree angle between the tension and the vertical, so resolving the tension in the vertical direction gives you .
3. (Original post by jessyjellytot14)
https://e4c57ffe72e64565dd23ce74ff8c.../Resolving.pdf

I don't understand part b (ii) of the first question. How would you draw the force diagram and which is the resultant force when F is vertical? Every time I try to draw it, I end up getting the wrong answer because I use Tan(theta) = Opp/Aj but according to the mark scheme, you should use Cos(theta) = Adj/Hyp.... but I don't understand why.
I just basically drew up what Zacken said, along with a little explanation to how we find horizontal and vertical components when the force acts at an angle

4. (Original post by KaylaB)
I just basically drew up what Zacken said, along with a little explanation to how we find horizontal and vertical components when the force acts at an angle

That's very neat!
5. (Original post by Zacken)
That's very neat!
Thank you

Spoiler:
Show
it took more attempts than I care to admit for it to reach that standard
6. (Original post by KaylaB)
Thank you
Spoiler:
Show
it took more attempts than I care to admit for it to reach that standard
Mine never has and I've done a lot of maths.
7. (Original post by KaylaB)
I just basically drew up what Zacken said, along with a little explanation to how we find horizontal and vertical components when the force acts at an angle

Oh wow thank you for taking the time to draw it out ! In the triangle you drew would y represent the weight force?
8. (Original post by KaylaB)
I just basically drew up what Zacken said, along with a little explanation to how we find horizontal and vertical components when the force acts at an angle

X
Whoa that drawing
9. (Original post by Zacken)
You're talking about b(ii), that's just resolving the tension vertically. There's a degree angle between the tension and the vertical, so resolving the tension in the vertical direction gives you .
Thanks, I would rep you but it won't let me
10. (Original post by jessyjellytot14)
Thanks, I would rep you but it won't let me

would represent the horizontal component of the tension, nothing more.
11. (Original post by jessyjellytot14)
Oh wow thank you for taking the time to draw it out ! In the triangle you drew would y represent the weight force?
(Original post by Zacken)

would represent the horizontal component of the tension, nothing more.

Yeah exactly, y is the horizontal component of the tension. I just labelled it y so that you could work out what it could be using the triangle, which is

(Original post by Student403)
Whoa that drawing
It's one of the only things I'm good for in mechanics
12. (Original post by KaylaB)
Yeah exactly, y is the horizontal component of the tension. I just labelled it y so that you could work out what it could be using the triangle, which is

It's one of the only things I'm good for in mechanics
Fair enough - I'm sure you're good at the content too

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