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  1. S

    Physics Unit 4 JUNE 11/6/12

    v is max whn it is in the equilibrium position so i guess its zero time and displacement is also zero and its the same formula for velocity bt cuz (A x angular velocity x sin x angular velocity x time is zero so A x angular velocity is left)
  2. S

    Physics Unit 4 JUNE 11/6/12

    actually i did it by taking time as 0 when max velocity is v=Ax(angular velocity)do ths and check
  3. S

    Physics Unit 4 JUNE 11/6/12

    ya sure :)and btw u wil revise it frm the book or revision guide?
  4. S

    Physics Unit 4 JUNE 11/6/12

    ya :) ok i ned help also 4 q(12)last part and q(14) whn they ask abt verification tht rope won't slack :)and sry again
  5. S

    Physics Unit 4 JUNE 11/6/12

    ok i wanna ask u q(11) is it necessary 4 us?
  6. S

    Physics Unit 4 JUNE 11/6/12

    sure :)
  7. S

    Physics Unit 4 JUNE 11/6/12

    so the driving frequency shld equal the natural frequency of the object oscillating?and ya the mark scheme is given u can c tht two files with the same name 1 is 4 ques and the other 4 answers
  8. S

    Physics Unit 4 JUNE 11/6/12

    Ya they r lil tough and do we hve 2 study the experiments like the one's given in the paper?and if we push smethng and let it oscillate freely then its oscillating at its natural frequency bt there is no resonance so how we can cause resosnance?
  9. S

    Physics Unit 4 JUNE 11/6/12

    I need u 2 help me in the difference between forced oscillation and resonance :)
  10. S

    Physics Unit 4 JUNE 11/6/12

    ya ofcourse i'll send u the whole file and plz do u hve any notes abt forced oscillations and resonance im really confused a bit in tht tell me if they reached u
  11. S

    Physics Unit 4 JUNE 11/6/12

    its ok :)
  12. S

    Physics Unit 4 JUNE 11/6/12

    Q's 4,5 and 6 whn u can do them plz tel me the ans and sry again :)
  13. S

    Physics Unit 4 JUNE 11/6/12

    hehe ya complicated equation thanks alot :) nw im goin 2 send u a paper containing al ocillation ques and i hve doubt in sme so if u can solve them so ican check my answers :) bt its helpful cuz its classified 4 ths topic
  14. S

    Physics Unit 4 JUNE 11/6/12

    no its ok:) ya i used the 1 like we use in discharing of capacitor bt then after finiding the final activity then further use the equation A= decay constant x N i was wondering y they used ths if we already found the remaining caesium?
  15. S

    Physics Unit 4 JUNE 11/6/12

    Q17 part (d)
  16. S

    Physics Unit 4 JUNE 11/6/12

    ths ans is 4 the que in september 2011 20 years after the cylinder?
  17. S

    Physics Unit 4 JUNE 11/6/12

    ya for jan 2011 Q 17 the 4 marks que
  18. S

    Physics Unit 4 JUNE 11/6/12

    in 2011 jan paper Q 17 part (d) 1st we use the formula to find the number remaining then after tht y do they use A=decay constant x N if we already found the remaning caesium from the 1st equation?
  19. S

    Physics Unit 4 JUNE 11/6/12

    Thanks :)
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