5.71 bathroom scale

Was anyone able to correctly find the answer to this problem?

As far as I know, mass (in kg) doesn't change regardless of acceleration.

4.58 "Helicopter Problem"

Does anyone know how to do this problem?

I tried it and I got 16819i, 0j, -3364k (all in Newtons) but says wrong

I thought it might be because of sig figs, so i tried 17000i, 0j, -3400k still wrong :/

I used m= 28032kg from the 2.75E5 N

Did someone who got this correct use the Newtons as mass and get it correct? or did you convert the Newtons to kg first, and then use as mass?

Blocks in an elevator ranking task

Anyone get part b?

I don't know if any of you guys have trouble with copying the data.

(Or may be it's just me for using Chrome)

Anyways, you can copy this and paste in Excel :)

When copying, copy the whole post and past it to Word to get the table.

I don't know exactly why, but I get only list of numbers if I try to copy only the table.

t(S)	x(m)
0	0.074938
0.0333	0.419382
0.0667	0.80187
0.1	1.270251
0.1333	1.623772
0.1667	1.847934
0.2	2.220177
0.2333	2.387535
0.2667	2.794794
0.3	2.947321
0.3333	3.29177
0.3667	3.484816
0.4	3.691514
0.4333	3.752497
0.4667	3.996829
0.5	4.095795
0.5333	4.22594
0.5667	4.287084
0.6	4.497307
0.6333	4.447558
0.6667	4.533474
0.7	4.62196
0.7333	4.662088
0.7667	4.629701
0.8	4.676954
0.8333	4.500983
0.8667	4.525649
0.9	4.494198
0.9333	4.352884
0.9667	4.151631
1	4.148494
1.0333	3.999395
1.0667	3.802416

Statistical Analysis and Excel Lab

Does anyone know if we needed to complete part 2 on the lab that's due tomorrow? And does anyone know what questions we needed to answer for this lab?

Welcome!!

Hey Guys

Like Professor Rickard mentioned... "PHYSICS IS HARD"... so I created this blog so that we can all help each other out when Prof. Rickard is not available. Feel free to post questions regarding the H.W., classroom material, or any other physics related questions or thoughts. I do ask that you don't just post answers to H.W. but rather ask conceptual questions that will stimulate thinking or instead, provide information that you found helpful when solving a problem so that we can all take a valuable learning experience from this blog. Good luck!!