Further Mathematics: Post your doubts here!

[randomcod]

http://papers.xtremepapers.com/CIE/...athematics - Further (9231)/9231_s04_qp_1.pdf
Question 4, help!

 

[HassanAhmed05]

Hello,
I'm an Olevel student seeking advice. Is Alevel Further Math a very difficult subject to get an A in? I Might take it but not sure as many people get Cs or drop it.

 

[Mohammad Farzanullah]

My question is that my sir said that when we are taking moments at A, there is no need to consider forces at C of AC on BC and vice versa. Why is this so? Why shouldnt we account for forces at C when taking moments at A? Is it bcoz at C, force of AC on AB and AB on AC would be equal and opposite that they would get cancelled. if this is the case, how can we be sure that the 2 forces at C are same?
Thanks

 

[Nazirah Ahmad]

Hello any kind souls able to help me with Q7 November 2006 on Polar Coordinates? The second part how do you use the w and then integrate I can't get the idea. Any help asap is really appreciated.

 

[Azee]

Hello any kind souls able to help me with Q7 November 2006 on Polar Coordinates? The second part how do you use the w and then integrate I can't get the idea. Any help asap is really appreciated.

here you go

 

[Nazirah Ahmad]

here you go
View attachment 50659

Oh my god thank you so much. You're an angel. May God bless you. Have a good day

 

[randomcod]

I was wondering if any of you had some notes to share on further mechanics, specifically "Rotation of a Rigid Body" and "Equilibrium of a Rigid Body under coplanar forces"!
Thanks!

 

[Talha Irfan]

My question is that my sir said that when we are taking moments at A, there is no need to consider forces at C of AC on BC and vice versa. Why is this so? Why shouldnt we account for forces at C when taking moments at A? Is it bcoz at C, force of AC on AB and AB on AC would be equal and opposite that they would get cancelled. if this is the case, how can we be sure that the 2 forces at C are same?
Thanks



View attachment 50631

Yes, that is the case. We are essentially looking at resolved contact forces at C with vertical and horizontal components. Since the horizontal force exerted by one rod is equal and opposite to that of the other rod (action-reaction pair, 3rd Law) and same case for vertical components, the forces gets cancelled and need not to be taken when considering the WHOLE system!

 

[Mohammad Farzanullah]

Yes, that is the case. We are essentially looking at resolved contact forces at C with vertical and horizontal components. Since the horizontal force exerted by one rod is equal and opposite to that of the other rod (action-reaction pair, 3rd Law) and same case for vertical components, the forces gets cancelled and need not to be taken when considering the WHOLE system!

I get it. Thanks for your help

 

[Aliya Naqvi]

Cam someone please help me solve this...

 

[Mohammad Farzanullah]

View attachment 51090Cam someone please help me solve this...

 

[Charlotte20102013]

Can someone please help me with 9231/01/ON/08 Q7 ? Maybe a step by step solution? I've seen the marking scheme but still can't get the equation given there. Thanks.

 

[KWIKIW]

Can anyone please send me notes on Further Pure Mathematics?
Matrices and linear spaces most importantly.

 

[Dream.Eater]

Can someone please explain this ?

 

[nupsNH]

Hello guys
I have difficulty to solve a question on equillibrium
June 2007 number 3 paper 2
I need to check my step whether i did them well or not
Thanks in advance

 

[Azee]

Hello guys
I have difficulty to solve a question on equillibrium
June 2007 number 3 paper 2
I need to check my step whether i did them well or not
Thanks in advance

 

[nupsNH]

View attachment 51835

thanks you very much

• where did you get 6acos(alpha)
  when you take moment about A the normal contact force at D is perpendicular to surface
  but that force doesnot coincide with the stepladder
  so how you calculate that distance 6acos(alpha)

 

[Aliya Naqvi]

PLease explain the first part

 

[nupsNH]

Hey guys
I have difficulty to solve these two mechanics questions
Can i get the solution step please
9231 n09 number 5
And j09 number 4
Thanks in advance

 

[mr dam bhai]