Mathematics: Post your doubts here!

[Suchal Riaz]

View attachment 42224 I have been stuck on this question PLEASE do it someone!!!

And please I need all details, pretend you're teaching a toddler

if it requires further explaining please ask freely.

 

[usama321]

I am very sory for late response. usama321 daredevil
please look at the diagrams and if it needs explaining tell me i will explain in greater detail.

What i am confused about is why do we ignore the weight of the ring while resolving vertically?

 

[Maira Siddique]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s13_qp_41.pdf

Please explain Q7 with working..someone? PLEASE? Part (i)

 

[usama321]

in part 1 or 2??????

part 1

 

[Suchal Riaz]

when we are taking the Ta then it includes the weight of ring already. because Ta sin(CAB)= weight-f

 

[princeali97]

Why didnt u take T2 cos into account un the second part?'

Why will u take the horizontal comp. of T2.?The Ring is being acted by T1 NOT T2.

 

[Browny]

http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_w04_qp_4.pdf

Can anybody explain question 6 please in detail? I've been stuck in this question for quite a long while and I would be very thankful to anyone who can give me a detailed explanation if possible?

 

[Suchal Riaz]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s13_qp_41.pdf

Please explain Q7 with working..someone? PLEASE? Part (i)

here you go

 

[Browny]

http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_w04_qp_4.pdf

Can anybody explain question 6 please in detail? I've been stuck in this question for quite a long while and I would be very thankful to anyone who can give me a detailed explanation if possible?

 

[Ayeshak93]

if it requires further explaining please ask freely.

Thank you I understand it completely but could you solve it for the angle AP1X....

 

[Browny]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w13_qp_43.pdf

Can anyone explain why we write 24 as only the answer as the solution of quadratic gives 2 values of V?

 

[Browny]

part 1 is easy
part 2 i'll try!!!!!

Can you explain part 1 also as i don't understand why we don't consider the friction between the 2 boxes?

 

[Thought blocker]

Can you explain part 1 also as i don't understand why we don't consider the friction between the 2 boxes?

Q6 :-

Q7:-

 

[Suchal Riaz]

Thank you I understand it completely but could you solve it for the angle AP1X....

in the diagram i made in the attachement the angle between 5.5 N and 7.3 N can be found like arccos(5.5/7.3)=41.1 degree
this angle is same as this theta because this is angle b/w 5.5 and7.3 N forces.

b

 

[Browny]

Q6 :-

Q7:-

Thanks, but I have the book and I still couldn't understand.

 

[Browny]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w13_qp_43.pdf

Can anyone explain why we write 24 as only the answer as the solution of quadratic gives 2 values of V?

 

[Thought blocker]

Thanks, but I have the book and I still couldn't understand.

Part i )

 

[Suchal Riaz]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w13_qp_43.pdf

Can anyone explain why we write 24 as only the answer as the solution of quadratic gives 2 values of V?

which question?

 

[Browny]

But why don't we consider friction between the 2 boxes?

 

[Browny]

which question?

Sorry question 5.