u/Dazzling-Werewolf985

Figure 4 is the Sankey diagram in the top right

I got everything right except for 4 a). Somehow I also got everything on the next page right too first time but not this 4 a). Why does the KE not changing mean it's not included in the diagram? Is the implication that the others are changing? Why would they be if KE is constant?

My guess is that it's because Chemical Energy from the fuel isn't constant but I don't know why it would or wouldn't be. What are everyone's thoughts? Ty

I’ve gotten everything right except for b) iii). Why did they calculate the horizontal component - 54cos(35) - of the tension in the wire? And why did they add it when it’s acting parallel to point a? The only forces I’d imagine would be relevant to use for the moments here are the vertical component of the tension in the wire and the weight which are both perpendicular (rather than parallel) to the line from A -> bottom right corner of the sign. The following question - iv) doesn’t make sense to me for the same reason.

For b ii) I just did 54sin(35) x 0.68m = W x 0.34m. I just don’t get why it’s wrong

Thinking about it some more, is the 54cos(35) factored in because the sign is in equilibrium? There is a horizontal component to the tension after all but if they’re asking us to take a moment from point A I still don’t know why we’d use a force parallel to it to do that. Hopefully someone here can see the error of my ways. Ty🙏🏽

I’ve calculated the anti-clockwise moment to be 160Nm and the CW moment to be 320Nm. Wouldn’t the torque have to be 160Nm ACW to bring the bar to equilibrium? First torque question btw

I got this question right (answer is B) but I don’t know why. I know that upthrust - density x volume x gravity - is constant because all of its factors are constant (right?). The gravity pulling the sphere down is also supposedly constant so that leaves drag acting on the sphere from the water being moved out of the way as the ball rises. But why would drag decrease the higher it goes? I think it would have to in order for the resultant force to decrease. I considered this but the q says the density of the water is uniform. Or am I just wrong about it being drag. Thank you all

For b) ii)‘s mark scheme - why is F(B) x 5m (distance from Pivot B to Pivot C) equal to the sum of moments about Pivot C? I know that the beam is in equilibrium but I don’t know where to go from there

Part a) isn’t relevant btw

Question 2 under the blue Summary Questions on the bottom left - the answer is in the green box numbered 2. I can see that they didn't want an exact answer but why didn't they add the atmospheric pressure as part of the calculation? It still would've rounded to 6 million pascals

I used the record button in FL to record the start of this song - during the recording, I raised the tempo manually till it got to where i want it to be for the rest of the song

I thought it was supposed to create an automation clip tho? I had automation ticked after all when i right clicked the record button. Cuz now I don’t know how to make it so that the tempo stays at 130 for the rest of the song. In the vid you’ll see me looking for anywhere I can edit the recorded automation. You can also see the bpm falling back to 10 as the pattern repeats instead of staying at 130. I’m sure i can just bounce the automated intro out and do it that way but I also wanted to see if it was possible to see/edit the automation at all. Thank you all in advance

https://youtu.be/70YWEolI8vE?si=PMiqUc5A8gKnT2Q-

At around 0:27 he (Zaytoven) hand-tapped some hi hats in but they each 1) rolled with a single tap and 2) rolled on tempo

I have an akai mpk 49 which has a 3 x 4 drumpad on it, fl studio and some hi hat samples. I’m used to just using Alt + U to chop stuff in the piano roll after clicking hats in but I’ve never seen this before. How do I try this myself? Loop points? Thanks people