Luke Rainbird Posted March 14, 2012 Report Share Posted March 14, 2012 Just drawing up another MSPaint image haha, 2 secs Edit, ok. Yeah, your formula is spot on, here's the working/explanation: Ok, starting hanging down as required this time! We know that we can split up the 2m start rod into 2*cos(theta) + 0.027 (Is that clear from the image, if not shout) So, we know that 2*cos(theta) = 2 - 0.027 as such, cos(theta) = (2-0.027)/2 so theta = arccos((2-0.027)/2) =0.165 rad or around 9.425 degrees I think that's about right, though I'm in the middle of 2 other bits of coursework/coding so I may very well not be thinking straight 1 Quote Link to comment Share on other sites More sharing options...
ManxTrialSpaz Posted March 14, 2012 Report Share Posted March 14, 2012 (edited) Ignore it, it's wrong Just drawing up another MSPaint image haha, 2 secs Oh shit, yeah. Hadn't noticed Edit: Yes! That's made it a lot clearer. Cheers Rainbird. Edited March 14, 2012 by ManxTrialSpaz Quote Link to comment Share on other sites More sharing options...
Luke Rainbird Posted March 14, 2012 Report Share Posted March 14, 2012 No problemo Quote Link to comment Share on other sites More sharing options...
Luke Rainbird Posted March 20, 2012 Report Share Posted March 20, 2012 Some people are so freakin' retarded is hurts. Listen: http://imgs.xkcd.com/verizon_billing.mp3 Quote Link to comment Share on other sites More sharing options...
ManxTrialSpaz Posted March 20, 2012 Report Share Posted March 20, 2012 Some people are so freakin' retarded is hurts. Listen: http://imgs.xkcd.com/verizon_billing.mp3 I've heard that before, but forgot just how frustrating it was to listen to. I am so headf**ked by this stupidity. Quote Link to comment Share on other sites More sharing options...
monkeyseemonkeydo Posted March 21, 2012 Report Share Posted March 21, 2012 To be fair, he kind of makes things worse for himself by the way he poorly tries to explain it and keeps on cocking it up himself. Quote Link to comment Share on other sites More sharing options...
JT! Posted March 22, 2012 Report Share Posted March 22, 2012 Never heard the full version before. Extremely frustrating just to listen to. It's unbelievable that out of all the people he spoke to non of them seemed understand basic maths. Quote Link to comment Share on other sites More sharing options...
casualjoe Posted March 22, 2012 Report Share Posted March 22, 2012 Euler would be turning in his (rather plush) grave. Quote Link to comment Share on other sites More sharing options...
dann2707 Posted April 12, 2012 Report Share Posted April 12, 2012 I'm super stuck on the last page of this over easter assignment for uni, if I posted the page on here would anyone be able to help me with it please? Quote Link to comment Share on other sites More sharing options...
Luke Rainbird Posted April 12, 2012 Report Share Posted April 12, 2012 Chuck it up and we can at least take a look Quote Link to comment Share on other sites More sharing options...
dann2707 Posted April 12, 2012 Report Share Posted April 12, 2012 Just nipping to Uni now, will post it later. Cheers Quote Link to comment Share on other sites More sharing options...
dann2707 Posted April 12, 2012 Report Share Posted April 12, 2012 Yo so its 10, 11 and 12 im stuck on. Any help.please !! pulling ny teeth out Quote Link to comment Share on other sites More sharing options...
JD™ Posted April 12, 2012 Report Share Posted April 12, 2012 I like to come into this thread to remind myself just how much of my Maths A level I've forgotten. Stuff like that scares me now Quote Link to comment Share on other sites More sharing options...
Luke Rainbird Posted April 12, 2012 Report Share Posted April 12, 2012 Yo so its 10, 11 and 12 im stuck on. Any help.please !! pulling ny teeth out Without knowing what you've done on the course/expected to know I'm going to assume you've covered some basic differentiation? (Since that's what 10/11 seem to want you to do) 10 is just a bit of differentiation. Once gives you stationary points and twice tells you about the nature of them. Though from plotting the curve (or just visualising it since it's a relatively straightforward x^3 type) you should be able to get a pretty good idea of things. 11. Again, differentiating gives you velocity. From here you should be able to find the value of t for v(t) = 0 and work out the other parts (acc. = dv/dt as usual) 12. Will write up some shiz and get in here to try and explain it after food Edit; f**k it, I've got a minute while things are cooking. This should get you going From there, you've got a function in x much like in Q10. Find the maximum of this function for the final part of the question Quote Link to comment Share on other sites More sharing options...
dann2707 Posted April 13, 2012 Report Share Posted April 13, 2012 Only got a quick glance at this earlier luke as I was headed out to ride. Ill have a good look at it tomorrow and make sense of it, Cheers man Quote Link to comment Share on other sites More sharing options...
Robwalker Posted May 9, 2012 Author Report Share Posted May 9, 2012 Am i on the right tracks? Its asking 'solve for 0<x<720' Answers to one decimal place. I was expecting a quadratic equation right about now, but that -2 as the constant is putting me off. Quote Link to comment Share on other sites More sharing options...
Joe_Elding Posted May 9, 2012 Report Share Posted May 9, 2012 if it doesn't factorise easily use the quadratic formula Quote Link to comment Share on other sites More sharing options...
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