<p>bloopy boo</p>
<p>Shouldn’t the question with the pulley and two equal weights be T=W?
Since both the blocks are of equal weight, the system is at rest.
so, mg - T = ma.
Since the system is at rest, a=0.
so mg - T = 0
and T = mg, ie T = W, not T=2W.</p>
<p>and what was the answer to the question about the radius of a circular loop/track gets halved, so what happens to the velocity?</p>
<p>sorry for the above, i left my account open and my little brother typed that. He’s very mischevious.</p>
<p>@aditya: the answer of the pulley question already been discussed quite intensely, look it up.
And the answer to loop question was (v)*(2)^.5</p>
<p>Question! Did any of you guys get a bunch of choice C’s and a bunch of choice D’s at various points during the test (I think it was towards the end, though I’m not sure anymore)?</p>
<p>i think i got like 5 C’s in a row in 40’s ~ 30’s or something…
DOES ANYONE KNOW THE ANSWER TO CAPACITATOR GRAPH QUESTION? why is it negative decay graph? I just chose the one where it is negative slope and then zero slope</p>
<p>william22 , do u remember what the graph was of ? what vs what …?</p>
<p>Charge v/s time</p>
<p>Yea, it was charge vs. time, and choices were
one with zero slope then negative slope
one with negative slope then zero slope
one with negative decay
two others that probably aren’t answers
I picked negative slope then zero slope cuz question said capacitor was already charged, so I thought the charges would flow and charge on capacitor would decrease with negative slope and then stay at zero because the charges accumulate…</p>
<p>Any advice of what books to use to study in hindsight or things you wish you would have looked over? I’m taking it next year and would like some advice. Thank you.</p>
<p>For the elevator prob I got 8000.
@OOOoooOOOooo: I would def use Princeton review</p>
<p>I wonder what which one of the two, princeton review or sparknotes practice tests, do people who have taken the exam feel helped them most in preparation for the real thing.</p>
<p>Which resembled the real thing more?</p>
<p>I took both and I would say PRhelps with the formulas and concept but neither have tests that r really similar to the real thing</p>
<p>william 22 it was a question about discharging of capacitors. q=Q*e^-t/CR so the graph is like a rectangular hyperbola. I think the test was pretty average. got 73 correct omitted 2</p>
<p>where q= charge at time time t, Q= initial charge</p>
<p>MICKYS go for barrons. their practice tests are closer to the real thing</p>
<p>Shinchan,
So would the answer be thhe graph with negative constant slope then suddenly horizontal line?</p>
<p>william22, it was the graph with negative non constant slope approaching X axis but never touching it.</p>
<p>scores are out! :D</p>