« previous next »
Pages: 1 2 [3]   Go Down

Author Topic: Physics Paper4  (Read 4213 times)

Offline TJ-56

  • SF Citizen
  • ***
  • Posts: 192
  • Reputation: 1969
Re: Physics Paper4
« Reply #30 on: May 10, 2011, 02:27:19 pm »
Quote from: Sue T on May 10, 2011, 02:17:05 pm
okkkkk sooooo E directly proportional to A2
E ---------> A2
15x10-3-------->(5x10-2)2
(80/100)15x10-3----------->a2

15x10-3 . a2 = (5x10-2)2 . (80/100)15x10-3

do the math im tired now  ::)

Again thanx, that cleared it up, I have totally forgotten about that equation.
Logged

Offline Sue T

  • SF Citizen
  • ***
  • Posts: 171
  • Reputation: 5415
  • Gender: Female
Re: Physics Paper4
« Reply #31 on: May 10, 2011, 02:36:02 pm »
Quote from: ruby92 on May 09, 2011, 07:55:55 pm
o/n 2008 3c(ii)
M/j 2009 9b, 11 biii
on 2008 3cii) as it moves through the cloth, it is at a displacement of 3mm. there is a formula for the velocity at any point :
v = omega (sqroot(x2o- x2) where xo is ur amplitude
so just use this with a displacement of 3mm - ive attached smthin tht cod show why it is 3mm
Logged
Knowledge is knowing a tomato is a fruit; Wisdom is not putting it in fruit salad.
Pages: 1 2 [3]   Go Up
« previous next »