IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => GCE AS & A2 Level => Sciences => Topic started by: zara on December 10, 2009, 10:07:27 am

Title: Physics CIE
Post by: zara on December 10, 2009, 10:07:27 am
Can summon plz temme when do we use x=x0cos wt and x=x0sin wt? [in oscillations]


more doubts will be coming....
Title: Re: Physics CIE
Post by: MaNi_DaDuDe on December 10, 2009, 10:09:55 am
Quote from: Z.J.110 on December 10, 2009, 10:07:27 am
Can summon plz temme when do we use x=x0cos wt and x=x0sin wt?


more doubts will be coming....

IS this A2?
Title: Re: Physics CIE
Post by: zara on December 10, 2009, 10:10:28 am
Quote from: MaNi_DaDuDe on December 10, 2009, 10:09:55 am
IS this A2?
yep..
Title: Re: Physics CIE
Post by: zara on December 10, 2009, 10:55:09 am
after tht,,

A particle in SHM will have tis velocity leading the displacement by a phase angle of?
i have the answer pie/2 buh howw??
Title: Re: Physics CIE
Post by: slvri on December 11, 2009, 01:14:52 pm
that is a2 shm..............sorry but i dont know shm cuz im doing AS rite now :(
Title: Re: Physics CIE
Post by: nid404 on December 11, 2009, 04:04:25 pm
Even me doin AS....sorry can't help wid this
Title: Re: Physics CIE
Post by: MaNi_DaDuDe on December 11, 2009, 06:57:41 pm
What's the name of the topic?

We haven't covered this yet.

I may look it up for you though, so let me know the topic name.
Title: Re: Physics CIE
Post by: MaNi_DaDuDe on December 11, 2009, 07:57:03 pm
CLICK HERE  (http://faculty.musowls.org/mullins/Unit4a-Forces1.pdf)

Look at page 2.

This is from AP Physics Notes, but I think that's what you are talking about.

Hope it helps.
Title: Re: Physics CIE
Post by: girl_92 on December 12, 2009, 07:10:18 am
ya its x sin wen at t=0 the particle is at its equilibrium position tht gives u a sine curve
n x cos wen at t=0 particle is at its max displacement thid gives u a cos curve
chk ur notes gurl
nythin else do lemme noe
i hope i made it clear =)
Title: Re: Physics CIE
Post by: zara on December 12, 2009, 08:18:22 am
Quote from: libra_92 on December 12, 2009, 07:10:18 am
ya its x sin wen at t=0 the particle is at its equilibrium position tht gives u a sine curve
n x cos wen at t=0 particle is at its max displacement thid gives u a cos curve
chk ur notes gurl
nythin else do lemme noe
i hope i made it clear =)
yes Thanks By the way its not there in notes....i even chked it with sadia, she says the same buh its there in my txt n Thanks its cleared <3
Title: Re: Physics CIE
Post by: zara on December 12, 2009, 08:22:24 am
Quote from: MaNi_DaDuDe on December 11, 2009, 07:57:03 pm
CLICK HERE  (http://faculty.musowls.org/mullins/Unit4a-Forces1.pdf)

Look at page 2.

This is from AP Physics Notes, but I think that's what you are talking about.

Hope it helps.
no tht wasnt wht i was talkin about buh Thanks anyways i needed this as well!
Title: Re: Physics CIE
Post by: girl_92 on December 12, 2009, 06:34:05 pm
Quote from: Z.J.110 on December 12, 2009, 08:18:22 am
yes Thanks By the way its not there in notes....i even chked it with sadia, she says the same buh its there in my txt n Thanks its cleared <3
u r welcum =)
Title: Re: Physics CIE
Post by: MaNi_DaDuDe on December 12, 2009, 07:21:56 pm
Quote from: Z.J.110 on December 12, 2009, 08:22:24 am
no tht wasnt wht i was talkin about buh Thanks anyways i needed this as well!

You're welcome. ;D
Title: Re: Physics CIE
Post by: girl_92 on December 13, 2009, 06:02:37 pm
a student standin on a railway platform notices tth the first two carriages of an arriving train passes her in 2 sec and the nxt two in 2.4 s
the train is decelaratin uniformly.each carriage is 20m long when the train stops the student is opposite the last carriae how many carriages are there in the train
can ny1 solve this for me plzzzzzz i have an exam 2morrow