STAV 2011 + 10

[max payne]

can some one please PM me just the solutions to stav 2011. thanks

[pi]

Please do not ask for copyright material on the forum, whether through an upload or a PM.

[StumbleBum]

cynical ? hahah, lmao rather realistic if you ask me... i don't know if you did neap 2012, but the first motion question had a friction x distance graph.. the areas where the graph is constant meant no friction just driving force.. i used the same logic for this question..

I did do 2012 NEAP and no there is no friction x distance graph in the first question
Also i dont know why you would be applying logic from one question to another when they are different, as i said before and ill say it again for the third time, the graph in the 2010 STAV exam is BRAKING FORCE vs STOPPING TIME so therefore when the graph is constant it merely means that there is a constant BRAKING FORCE.
You seem to neglect this fact that i bring up every time you reply....

[WhoTookMyUsername]

Im pretty sure sutumble bum is cocrect

[WhoTookMyUsername]

For the question (attached)
When can we assume that the beam is infinitely thin?
I put B as overall it is in compression
but the answer is D (which i understand as it is due to Fg) but for another practically exactly the same question stated (correct answer) that "the beam is in compression"

how can we tell the difference?
thansk

[StumbleBum]

Where was the question that stated that the beam is only in compression from?
Was it implied in the diagram, as this diagram the beam is quite thick and i would assume that it is not infinitely thin, but if it was say the thickness of the wire in this diagram, then i would probably assume it is infinitely thin.
But as far as actually knowing, i have no clue when to assume infinite thinness or not.

[WhoTookMyUsername]

D: hope VCAA doesn't dog us with something like this

[StumbleBum]

I know what you mean, i really hope they don't have any MC where theres two answers that are right, but one is "more right".

[WhoTookMyUsername]

wouldn't think VCAA would do that, although i still remember last years bio exam where the proofreader must have been ridiculously high

[pi]

I think there was one dodgy M&S questions about a diving board which even some of the top students got wrong, apparently that was dodgy (I did my EPI on it, so I luckily had that one in the bag )

[Hutchoo]

^^ Did vcaa 2011 just then, must say, got that MC question [Question 10 -- Materials].
Only 26% of the state got that right T_T..
 

[pi]

^^ Did vcaa 2011 just then, must say, got that MC question [Question 10 -- Materials].
Only 26% of the state got that right T_T..
 

Great question, definitely my best moment in physics when that came up, luckily I did my damn project on it (although ironically my partner in that project got it wrong...).

[max payne]

^^ Did vcaa 2011 just then, must say, got that MC question [Question 10 -- Materials].
Only 26% of the state got that right T_T..
 

Great question, definitely my best moment in physics when that came up, luckily I did my damn project on it (although ironically my partner in that project got it wrong...).

could you please explain that question like why it wouldnt sag? thanks

[StumbleBum]

could you please explain that question like why it wouldnt sag? thanks

Pretty sure its because we have to treat all the mass of the diving board in the centre, but I could be wrong...

[max payne]

could you please explain that question like why it wouldnt sag? thanks

Pretty sure its because we have to treat all the mass of the diving board in the centre, but I could be wrong...

So...ideally in the real world it would sag? Since its mass is obviously not concentrated in the centre