Recent content by Elaren

Sakurai's Modern Quantum Mechanics is 1/2 of a very good graduate textbook. Unfortunately Sakurai passed away midway through writing it, and it is very obvious exactly where it swapped from their writing to just using their notes. The back half of the book, while by no means bad, is notably less...

This is why I said in my opening post that I thought the problem was invalid as written. Not the first time with this person. I am mostly checking here to see if I am missing something.

The problem says the force is 200N, and variable forces are not part of this course, so the marking on the picture is ignored I guess. Yes this is the amount of care I have come to expect in figure reuse from this instructor.

I put in the image of the problem in the only spot I could figure out how to do so. I am confused as to why people seem to be having trouble with the post itself. As to the problem being confusing, I agree. I mentioned the assumptions I was making in my work section (where the axis are, etc)...

Yes I agree the problem is not well written. I took it to be the block moving down slope, with the 2 m being along the x axis (not the slope), with the 200N pointed downslope, the spring pulling up slope.

That is the homework complete statement. There is no earlier part. I included the picture in the main text. No way I can see to add an image to the problem statement.

Note: wording is ambiguous so I assumed spring started from equilibrium, in which case it stretches as we go downslope. Final height (at lower point on slope) is 0. Distance along slope = Distance the spring stretches = d= ##s_f## = ##2/cos{\theta}## =2.13 Height change = h = ##2 tan{\theta}##...