***AP Physics C Mechanics 2014-2015 Thread***

@skieurope thanks for letting us know :slight_smile:

v^2 vs L? any takers?

yes!

I think @InductiveCurrent is right for version O. @vs1997 and @stoopidfoose are probably right for version M. I only took Version O so I know nothing about version M.

Yeah @johnstucky I had version O. You had the same, I presume.

i think its 1/8 too^

yeah v^2=3/2 gl or something. Got a weird value for g though but I guess that was part of the college board plan

Gahhh I got v²=6gL, I prob messed up

Edit: Form O btw (if that matters)

had to use both kinetic and angular energy…did you do that?

both forms had different questions, keep that in mind! :slight_smile: and yeah that question had KE and KE=.5Iw^2

you mean .5mv^2+.5Iw^2 right?

nvm I am wrong, it is just angular

that’s probably like a 2 point deduction if I did everything else right I hope?

Anyone here feel really confident about the test? Tag me.

The test is not hard imo, just the timing, it’s horrible, I guessed on a bunch of em. But for the ones that I did have time to do, I’m pretty confident

v^2 vs L… Only got because I put it in my calculator and did quadreg… LOLOLOLOLOLOL

wait, was it just angular for the bar that was swinging down, i just examined the angular KE at the bottom, not the regular KE

Did anybody get I=1/9 m*D^2 for the bar? Form M.

Guys, do not get freaked out. You could screw up TWO of the free response and still get a 5, provided you do well on the MC.

@agupte How good is"well" on the MC, 28+?