« previous next »
Pages: [1] 2   Go Down

Author Topic: Physics nov 08  (Read 2202 times)

Offline a7medokool

  • Newbie
  • *
  • Posts: 22
  • Reputation: 0
Physics nov 08
« on: May 24, 2009, 03:58:04 pm »
Hello could any 1 tell me how to do Q 1 c and D on this physics paper
Logged

Offline Shogun

  • SF Geek
  • ****
  • Posts: 495
  • Reputation: 25
  • Gender: Male
  • the heavens cry within the arrival of the best
Re: Physics nov 08
« Reply #1 on: May 24, 2009, 04:07:04 pm »
hi, is this paper 3 or 6?
Logged
one who masters both the pen and paper is indeed a true warrior.

\m/metal head\m/

Offline a7medokool

  • Newbie
  • *
  • Posts: 22
  • Reputation: 0
Re: Physics nov 08
« Reply #2 on: May 24, 2009, 04:11:09 pm »
yea yea sry didnt mention the paper its Paper 3
Logged

Offline Shogun

  • SF Geek
  • ****
  • Posts: 495
  • Reputation: 25
  • Gender: Male
  • the heavens cry within the arrival of the best
Re: Physics nov 08
« Reply #3 on: May 24, 2009, 04:14:12 pm »
the one about friction with 14 newton force right?
Logged
one who masters both the pen and paper is indeed a true warrior.

\m/metal head\m/

Offline a7medokool

  • Newbie
  • *
  • Posts: 22
  • Reputation: 0
Re: Physics nov 08
« Reply #4 on: May 24, 2009, 04:17:12 pm »
hmmm yea and could u help me to 1B too how to calcluate the mass of the trolley
Logged

Offline Shogun

  • SF Geek
  • ****
  • Posts: 495
  • Reputation: 25
  • Gender: Male
  • the heavens cry within the arrival of the best
Re: Physics nov 08
« Reply #5 on: May 24, 2009, 04:19:11 pm »
alright
Logged
one who masters both the pen and paper is indeed a true warrior.

\m/metal head\m/

Offline a7medokool

  • Newbie
  • *
  • Posts: 22
  • Reputation: 0
Re: Physics nov 08
« Reply #6 on: May 24, 2009, 04:25:50 pm »
So shogun did u figuire it out yet?
Logged

Offline Shogun

  • SF Geek
  • ****
  • Posts: 495
  • Reputation: 25
  • Gender: Male
  • the heavens cry within the arrival of the best
Re: Physics nov 08
« Reply #7 on: May 24, 2009, 04:36:35 pm »
bii)the equation is:
force=mass* acceleration

biii) f=ma
where f=force
          m=mass
         a=acceleration
so here a=2 and 'm' is giben as 12kg

so to find resultant force (f): 12*2=24N

ci)to find the total resultant force u have to add 24N and 14N (given in the question) we need to find 'a' (acceleration)
so 24+14=38N(total resultant force)
then use the formula (f=ma)
so it would be 38N=12*a
then by changing position (algebra) it will become 38/12
u get aceeleration 'a'= 3.17 meter per second square (m/s^2)

ci) use the formula to find velocity which is (velocity = acceleration*time) where 'a'=3.17 (from previous answer) and 't'=2.5s (given in the question)
so then 3.17*2.5
u get= 7.9m/s

d) the car moves with uniform acceleration. ((because at original angle of incline. it didnt accelerate because no resultant as friction force was same as the acceleration of the car.but here lubrication was added so friction froce was reduced and there was a resultant force (the accleration) thus the car aceelerated.))

any confusion or difficulty plz do ask me, im all here





Logged
one who masters both the pen and paper is indeed a true warrior.

\m/metal head\m/

Offline a7medokool

  • Newbie
  • *
  • Posts: 22
  • Reputation: 0
Re: Physics nov 08
« Reply #8 on: May 24, 2009, 06:03:38 pm »
Hmmm this is the 2nd variant Questions? right
I was aking about the 1st
Logged

Offline Shogun

  • SF Geek
  • ****
  • Posts: 495
  • Reputation: 25
  • Gender: Male
  • the heavens cry within the arrival of the best
Re: Physics nov 08
« Reply #9 on: May 24, 2009, 06:09:58 pm »
oh ok
then i ll try to find out the first variant one..
Logged
one who masters both the pen and paper is indeed a true warrior.

\m/metal head\m/

Offline a7medokool

  • Newbie
  • *
  • Posts: 22
  • Reputation: 0
Re: Physics nov 08
« Reply #10 on: May 24, 2009, 06:11:57 pm »
Its in the site Both variants are there
Logged

Offline zubair_slipknot

  • SF Citizen
  • ***
  • Posts: 140
  • Reputation: 5
  • Gender: Male
  • A new A* starer has been born in the world of IG
Re: Physics nov 08
« Reply #11 on: May 24, 2009, 06:14:02 pm »
hey if u can post the question its excelllent...if its too long its ok i am trying to download the 2st varient past paper
Logged
the only way to pass in IGCSE is to be determinant and should have a good self esteem...thts the best description i can get from my mind!!!!

Offline Shogun

  • SF Geek
  • ****
  • Posts: 495
  • Reputation: 25
  • Gender: Male
  • the heavens cry within the arrival of the best
Re: Physics nov 08
« Reply #12 on: May 24, 2009, 07:36:01 pm »
umm getting it sorry cuz the downlad took time
Logged
one who masters both the pen and paper is indeed a true warrior.

\m/metal head\m/

Offline Ghost Of Highbury

  • O_o_O lala!
  • SF Farseer
  • *******
  • Posts: 4096
  • Reputation: 41428
  • Gender: Male
  • Namaskaram!
Re: Physics nov 08
« Reply #13 on: May 24, 2009, 07:41:33 pm »
k.. heres ur answer..

1 c.)  use the formula F = m *a....therefore 0.7 = 0.8 (mass of trolley) * a

=> a = 0.7/0.8 = 0.875

d.) 1.) use the formuala v = u + at
u = 0, v = at
look at the table the acceleration of the trolley is 0.5 when the weight is 0.4
therefore v = 0.5 * 1.2 = 0.6 m/s

d. 2.) use the formula s = ut + 1/2 at(2)
u = 0
therefore s = 1/2 at(2)
======================================
hope it helped u ...!! :)
                 
                = 0.5 * 0.5 * 1.2 *1.2 = 0.36 m

Logged
divine intervention!

Offline tmisterr

  • SF Citizen
  • ***
  • Posts: 186
  • Reputation: 43273
Re: Physics nov 08
« Reply #14 on: May 24, 2009, 07:42:28 pm »
how do u do question 2(d) on the nov 2008 paper 3? on any variant, doesn't matter...
Logged
Pages: [1] 2   Go Up
« previous next »