<p>nah I thought it was the frequency. only logical answer</p>
<p>For the first match the graph questions, did you guys get a line with slope 0 as total mechanical energy of block?</p>
<p>And was the block speed the shape of a parabola?</p>
<p>When guitar string tension increases the frequency should change as well.</p>
<p>i Said total mechanical energy was the constant line</p>
<p>I said that the velocity was the U shaped graph? or V i forget what the question looked like</p>
<p>I said Potential energy was the upside down V shaped graph</p>
<p>I think the total mechanical energy remained constant.</p>
<p>Esplin thats what I got too, I know for sure the Total Energy one is right but Im not sure about the speed one</p>
<p>why wouldn’t potential E be upside parabola?</p>
<p>Potential energy doesn’t variably change with height it’s a linear change</p>
<p>pe=mgh</p>
<p>@Esplin it is the upside down parabola</p>
<p>Shouldn’t the P.E. graph be inverted U.
My logic: the block was continuously retarding and thus, the distance(or height) travelled was initially high but the height gained kept slowing because it was retarding and the speed was getting slower.</p>
<p>Was this the incline question? Where the block goes up then comes down? If so i put inverted U</p>
<p>yeah actually it was the inverted U [I dont even think there was a choice that was an inverted V]</p>
<p>There was both V and U both rightside up and upside down</p>
<p>Yeah thats what meant, inverted U for P.E.</p>
<p>And for the pendulum on the elevator, doesn’t the period decrease if elevator accelerates upward?</p>
<p>Does g change on the elevator?</p>
<p>I inserted that the T increases as g decreased.</p>
<p>I put it doesnt change, but now that i think about it, T should increase</p>
<p>Yeah but doesn’t g increase if elevator is accelerating upward?</p>
<p>Well, I thought that if the elevator were moving upward R>mg and if the elevator went downward then mg>R and something along this line. So, I went with g decreasing. I could be very wrong though.</p>
<p>I said G increased as the elevator goes up (G is now 10+acceleration of elevator)</p>
<p>and as G increased, T decreases because of the inverse proportion</p>