Any questions on this board?

[Adsolution]

That was an abysmal comma-splice.

[PluMGMK]

I need to learn how to post.
More importantly, why are 33 guests browsing this section?

[Ambidextroid]

Anyone here good at classical mechanics and bored enough to help me with some homework?

[PluMGMK]

I'm listening.
Assuming it's not too late which it probably is, since it's eleven hours later.

[Ambidextroid]

Assuming it's not too late which it probably is, since it's eleven hours later.

Unfortunately, but having it done at all is better than nothing I suppose.

I'll draw a mock up of the question: http://imgur.com/3Wv63XZ
I just can't remember all the steps, I got as far as T-9.8cos(60) = 4*a (for the 4kg) and (4a-T + 6a+T = 10a) = (9.8cos(60) + 9.8 = 14.7) so 10a = 14.7, a = 1.47 (for the 6kg) but I've made so many mistakes I don't know where to start...
Don't feel obliged to help though if it's too boring, I shouldn't really be asking other people to do my homework for me in the first place

[Master]

Oh lord, I'm remembering my A Level Mechanics and first year Mechanics module, I don't remember too much now, but I vaguely recall stuff like equating horizontal and vertical components, which is what you've done, I think.

[PluMGMK]

Okay, finally got around to digitizing what I did. I put together a solution at https://www.vigovproductions.net/AmbidProb.pdf which wasn't an entirely selfless act, since it gave me a chance to brush up on my LaTeX! I tried to explain each step, so I wasn't just "doing it for you"! And of course it's possible, since I haven't touched pulleys in two years, and never really liked them, that I made some stupid mistake.
Either way, does it help?

[Ambidextroid]

Okay, finally got around to digitizing what I did. I put together a solution at https://www.vigovproductions.net/AmbidProb.pdf which wasn't an entirely selfless act, since it gave me a chance to brush up on my LaTeX! I tried to explain each step, so I wasn't just "doing it for you"! And of course it's possible, since I haven't touched pulleys in two years, and never really liked them, that I made some stupid mistake.
Either way, does it help?

Ah, of course! I totally forgot you had to multiply the mass by G to find the force due to gravity. Thanks for going to all the trouble, I was really lost for a while there

[Hunchman801]

PluM's right indeed, though he could have made a1 prettier, like g(m1sin(α)-m2)/(m1+m2).

Someone can remind me what happened the "ven août 21, 2015 9:32 pm" ? According to the website it is the record of the users online
If memory serves it was PluM's "father".

I think they were stalking you, inco.

Or it was yet another invasion. They're much better at breaking such records than our members.

[incognito]

Someone can remind me what happened the "ven août 21, 2015 9:32 pm" ? According to the website it is the record of the users online
If memory serves it was PluM's "father".

I think they were stalking you, inco.

Or it was yet another invasion. They're much better at breaking such records than our members.

Stalking a Stalker?

The 2005 record seems pretty pathetic in comparison to now.

[Hunchman801]

The 2005 record seems pretty pathetic in comparison to now.

Yeah, that's pretty much why we never tried again.

[PluMGMK]

PluM's right indeed, though he could have made a1 prettier, like g(m1sin(α)-m2)/(m1+m2).

And then have to sub in the values with units, and write a fraction with loads of ugly "kg"s in it? No thanks!

[incognito]

The 2005 record seems pretty pathetic in comparison to now.

Yeah, that's pretty much why we never tried again.

Nah, I was mainly referring to the fact the idea became the RD.

[Hunchman801]

And then have to sub in the values with units, and write a fraction with loads of ugly "kg"s in it? No thanks!

Who evaluates their expressions themselves anyway? That's what computers are for.

Nah, I was mainly referring to the fact the idea became the RD.

Not exactly, it certainly was an inspiration but the first record day originated from a stunningly active day which we wondered if we could beat.

[PluMGMK]

It's still right and proper to keep track of units though, so I wouldn't feel right without writing it out first!

[Bradandez]

HOW THE FUCK DO I REMOVE DRM FROM ITUNES VIDEO FILES? FOR FREE I MUST AD.

[neo]

Hunch I want a record day again. That was fun. Does anyone remember the Nic Cage thread?

[jurebj]

That's my favourite thread.

[Hunchman801]

That was a really funny one indeed.

[RibShark]

What is this?


Anti-Rayinator protection?