Mechanics M1: Post your doubt here

[Ritter]

Can anyone help me with june 2010 p43 7 (ii).

 

[Amy Bloom]

Guys, my doubts:

 

[bamteck]

Jun11 p43 no4
Don't be depressed(smily), here it is
This paper I've already done it

Thanks buddy
Ouff this question is soo confusing

 

[AhShun]

Can anyone help me with june 2010 p43 7 (ii).

I've already answered this question in the previous pages
but i'll post it again

 

[iKhaled]

Guys, my doubts:
View attachment 16644

this paper suckssss!! i am doing this paper at the moment and these 2 questions suck

 

[Varuna0911]

For angle of the resultant in vectors does it have to be clockwise or anticlockwise?

 

[Asheeta]

For angle of the resultant in vectors does it have to be clockwise or anticlockwise?

angles measured in an anticlockwise direction are positive. consider the x-axis .... anything above it is positive and below it is negative.
so preferably anticlockwise if you are asking or else depending on the question.

 

[Amy Bloom]

this paper suckssss!! i am doing this paper at the moment and these 2 questions suck

I totally agree with you!

 

[GorgeousEyes]

please ju012 ,41 ,

can any one explain no.2 ii , no.3 iii , no.4 ii

 

[Ritter]

I've already answered this question in the previous pages
but i'll post it again

That's not exactly the answer to the question

The question says i)find the coefficient of friction between B and the floor.
ii)show that the acceleration of the boxes is not greater than 2 m/s^2
And your answer didn't show neither of them.

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s10_qp_43.pdf

Thanks anyway

 

[iKhaled]

I totally agree with you!

i have figured out how to do them do u still need help ?

 

[AhShun]

Guys, my doubts:
View attachment 16644

Nov11 p42 no6

WOW finally done it
try to understand in this mess lol

 

[AhShun]

That's not exactly the answer to the question

The question says i)find the coefficient of friction between B and the floor.
ii)show that the acceleration of the boxes is not greater than 2 m/s^2
And your answer didn't show neither of them.

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s10_qp_43.pdf

Thanks anyway

Sorry

 

[Varuna0911]

Nov 2011 p41 7(i)

 

[AhShun]

Nov 2011 p41 7(i)

v=0.16 x (100)^(3/2) - 0.016 x (100)^2
=0

v=0 =====>instantaneous rest

 

[Varuna0911]

could you do the rest of the question pls? aren't you feeling sleepy?

 

[bamteck]

v=0.16 x (100)^(3/2) - 0.016 x (100)^2
=0

v=0 =====>instantaneous rest

Nov 2011 p41 no. 2
What does it mean by magnitude of the resultant force there ? oO'

 

[leadingguy]

please ju012 ,41 ,

can any one explain no.2 ii , no.3 iii , no.4 ii

FR QUESTIion 2 art two the resultant is of 15N we know that... se diagram below.
gfind the angle alpha between resultant and x-axis
then find the x component
sorry fr the ugly presentation hope it is legible

 

[deepum]

Nov 2011 p41 no. 2
What does it mean by magnitude of the resultant force there ? oO'

It is the force on pulley,i.e there is a force acting on the fixed pulley due to the tension in the string passing around the pulley....here, there is a downward force of 2T acting on the fixed pulley.due to the string and the attached loads.....T=4.55.....MAGNITUDE OF THE RESULTANT FORCE=2*4.55=9.1...HOPE IT HELPS....

 

[GorgeousEyes]

FR QUESTIion 2 art two the resultant is of 15N we know that... se diagram below.
gfind the angle alpha between resultant and x-axis
then find the x component
sorry fr the ugly presentation hope it is legible

no It's nice , thank you very much