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So you just had to look. I told you it was pointless.

ok hows about a michael jackson joke

What time does micheal jackson go to bed?
when the big hand touches the little hand.

2. Retired Vet
Join Date
Nov 2001
Location
IRELAND.
Posts
7,772
Your about 50 yrs too late. This has been flogged to death.

3. Since you are all so bored and making pointless threads and what not, someone should PM me to help me with a relativity problem I'm having trouble figuring out.

Not that I'm going to keep my hopes up or anything, as when I usually mention the word 'physics', whatever thread I'm on dies.

So how about them Packers? Griffey get to 500 yet?

4. whats the physics problem?

5. packer suck,
you know why they saw michle jackson at k-mart?
he heard about the sale, litttle boys underwear half off

6. Originally Posted by monstercojones
whats the physics problem?
Special Relativity

Relativistic speed of light derived from Newtons second law.

In classical physics, force is given by
F=dp/dt
where p=mv
so
F=d/dt (mv)
=m dv/dt
=ma

So using F=m dv/dt
rearranging
(F/m) dt=dv
dv=a dt
integrating
int dv=int a dt
v=a int dt
v=at

Where a=F/m is the slope of the line (linear) on a t vs v graph. However, this is wrong, as the line should asymptotically approach a limit of c.

The problem is that p=mv is wrong in relativistic terms. Relativistically, p=(gamma)mv

So F=dp/dt
=d/dt ((gamma)mv)

BUUUUUT (gamma) depends on v........ so taking the derivative will act on (gamma) which DEPENDS on v.

I am trying to come up with a (rather complex) integral using substitutions and exponentials to show the actual speed of light barrier which can be reduced to non-relativistic terms when v approaches zero and gamma approaches 1 giving F=(1)ma=ma

This problem also deals with imaginary numbers, as the example given was the speed of 2c.

Classically, this gives (gamma)=(1-(v^2/c^2))^(1/2)=(1-4)^(1/2)=1/3i where i=(-1)^(1/2)

My problem is that I really don't know where to even start.
I'm thinking I need to use the non-classical definition of momentum p, but where and how?

7. After typing all of that out, I dang well better get some replies. I really don't care what the replies are about, but I better see some here real quick-like.

8. [shaking in my shoes]......... was up with all the chicken scratch????????????

[shaking in my shoes]......... was up with all the chicken scratch????????????
This was a pointless post in a pointless thread.

This was a pointless post in a pointless thread.
You're daaaaaaaaammnn right it was.

Now how about a solution to the problem, huh? I'll be up all night, so if it takes you a while, I'll still be here.

11. AR-Hall of Famer / Retired
Join Date
Aug 2001
Location
Wherever necessary
Posts
8,159
well at least we both agree that neither of us would know where to start on that

12. silly rabbits...........

just keeping the insanity going..........