Working with gravity.......
938276
It helps with the sagging but could use a little more lift for us Baby Boomers.
692631
Simply stated, I don't consider this "the book" on the subject, but it is a most-have.  It begins by developing some of the mathematical foundations needed to solve the problems; followed by some Newtonian mechanics (basic concepts: force, energy, motion in 1D-3D, and many examples and applications), and ends with special relativity.  The topics are presented in a clear and straight-forward manner, although some of them were too simple and not as thorough as I wished.

This book corresponds to a regular 1st semester in mechanics.  It should be complemented with the second book (Classical Mechanics) which deals with non-inertial reference frames, systems of particles, rigid bodies, Lagrange equ. and Hamiltonian Theory.

I give this book 4.5 stars (I'm a tough grader)
1822818
this book was in good condition for it being used. thanks. physics is hard though.
1451039
Just used your lifting straps. They are badass!!! Keep up the awesome work.
2253133
just stop buying liquid fertilizers and get some agriculutral grade stuff, way cheaper way eaiser and just as effective, the best part, using spoons or scale to measure nutes instead of graduated cylinders. to be fair as far a g cylinders go these are cylinders with measure ments on the side.
4397735
This is a great book that will test/help your understanding of some little details of physics. The problems are tricky in that they there are some subtle physics understandings involved in finding the correct solution. Added attraction is the author gives you multiple choices - may of which "seem" like they could be the right answer.
161904
So I've just gotten this book earlier today and read the first few chapters. I'm currently taking the mechanics course (engineering undergrad btw). The book explains well but since I'm not really into the history of how the laws or theories are formed, I just skim through them. The book gives quite a few examples. However, I believe resnick and Halliday book is better if you want more practice or exercise. I personally bought this book so as I understand things better (I didn't take physics in high school, so I'm struggling right now in my class) even though my professor uses Physics 4th edition by resnick and Halliday (very old book; not Fundamentals of Physics). But I think, for theory, this book is good. However, don't forget to see the edition. Wanted to buy the latest edition but end up buying the older edition ' and so, I got confused in the numbers like the gravity it's not 9.8 or 10 but 6 something --" (or maybe I read it wrong) well, anyway, it is still a good book.
3632635
I now appreciate the joke about the physicist giving a solution to a chicken farmer on how to get greater return from his stock. Unfortunately the solution only is valid for spherical chickens in a vacuum. (Big bang Theory- Dr Leonard Hoffstader)
913737
If you want a good work out pushing this cart over the sand, then here it is!  Maybe it would not had been so bad if it was not 100 degrees out.
But I had to turn the cart around and pull it backwards to get it over the sand. They need to improve those tires.  However I do like it, but I recommend you have a strong person with you to pull it!
4533484
This is an interesting book to read. It has clarifying graphs and some equations in 15 chapters with glossary, bibliography, and index by the retired professor in the philosophy department at Northern Arizona University, in Flagstaff,  AZ. As a philosopher of science, Peter Kosso considers his duty to question the validity of the various scientific methods used to explain and understand nature.
 On p. 7 Kosso admits that The law of gravityshows that the gravitational acceleration  must be independent of mass.  Yet on  p. 12  he states: Force  [italic added] equals mass times acceleration.  And on pages 26, 130, and 156 he gives the equation: F = ma  and  states: With gravity, the force is caused by the  masses of the two objects,  On p. 146 he states: massive objects are the source of gravity,  On p. 217  he defines  Weight of an object as its mass times the acceleration W = ma. But Weight is not Force. A  hundred-kilogram ball of a heavy metal weighs 100,000  times more than a one gram ball measured on a balance. But if we drop these two balls from a high tower in a vacuum, so that air resistant does not affect their  motion, they both fall with the same acceleration and hit the ground at the same time. F  W.
  Equating the gravitational force with the quantity or density of inert matter is incorrect. The  correct  interpretation of Keplers  third law is: Gravitational force is equal to acceleration times the area: F = a . A. See  my book Gravitational Force of the Sun. Johannes Kepler's third planetary law is THE  UNIVERSAL LAW OF  GRAVITATION, even though he called it Harmonice Mundi (The Harmony of the World.)

 On pages 104 - 105 Kosso discusses Johann Daniel Titius  (Jan  02 , 1729  -  Dec  16, 1796)  -  Johann Elert Bode (Jan 19, 1747  -  Nov 23, 1826) distance law and  presents Table 8.2. He does not give reference to Chapter 6, pages 155-159 of my book Gravitational Force of the Sun. A plot of the mean distance of the planets  from the sun, r, versus the sequential numbers, n, is shown in Figure  6.1. This same data, plotted  on a semi-logarithmic paper, is presented in Figure 6.2 together with the least squares line of regression. The equation for this line, is presented on p. 157, and  the correlation coefficient is  r  =  0.9967. It is concluded that the distance law  is an integral part of gravitation; i.e., gravitation is quantized
 On  p. 191, Figure 14.1 of Kosso is Figure  5.1 on  p. 126 of my book Gravitational Force of the Sun with no  reference to it. In my book Figure 5.2 on p. 127 is the same data plotted on a logarithmic paper and in the following section in chapter 5 the new correct interpretation of Keplers third law as Fs =  a . A is presented.
 A second edition of this book to include the most recent data would be welcome.
3508207
I purchased a Gravity Pal a few weeks ago.  Something profound happened the very first time I used it.  I have lower back issues and have been seeing a chiropractor for 2 years.  When I tried the Gravity Pal for the first time, for just 2 minutes, I felt a shift in my lower back similar to what I experience with a chiropractic adjustment, only smoother, more natural, and painless.  It felt awesome - an effortless motion of something in my back that slid to where it should be, from a former displacement.  What I noticed is that the second time on the Gravity Pal there was a tiny movement in my lower back - nothing as dramatic as the first time.  Subsequent sessions (all very short - only a few minutes at a time) did not produce any movement in my back.  However, what I think has happened is that my lower back has stabilized.  Due to my schedule, I was unable to go to my usual monthly visit to my chiropractor.  It was 5 weeks - rather that 4 weeks - before I was able to go. Usually, after 4 weeks I start to feel some shooting pain in my lower back which goes away after I get my monthly adjustment from the chiropractor.  This time around, I was good to go!  No pain even after 5 weeks with no adjustment!  I may be able to stop seeing my chiropractor! :)
312476
Working pretty good so far.  Just wish it was attached so you could hand it vertically for use also.  I could probably find a way to fix it......  :\
3802078
thanks.....working on this book Every Day!?!??!! with my BIG 6'6" hands.....
1378991
I may rate this higher at a later date, but good Lord is this hard to set up. What am I, an engineer? However, I am going to keep giving this a try since I believe this product has good potential. However, it is a burden to set up. I haven't gotten nearly enough work done this afternoon since I've been messing around with this stupid thing. I'll give it another week or so, but this may end up getting returned.
3833672
I hope this will be okay...came in a very tight roll and as of now, it still won't lay flat.  Have it on the floor with weights trying to hold it flat, but so far not working. Maybe with the weather warming up and I can get it installed, it will be great!!!
1780217
Recently, by chance, Nobel laureate Gerardus t Hooft ( the head) came to my attention and I decided to buy some books he authored.  Introduction to GENERAL RELATIVITY is a small booklet  covering  on  page 1 to page 86  the basic physical ideas, the mathematical concepts and applications  of the subject very well and ends with gravitational waves. I like to compare parts of it to   Die Grundlage der allgemeinen Relativittstheorie from 1916 to see how ideas are progressing.  It is not a must on a bookshelf and the Author has made it free for humanity on his home page,  but I want to micro-recompense the author a little bit for his contributions to state of the art  physics, he has brought to life  so far. In addition my  copy  may be found, in the near or far future, by a young mind and awake his interest for nature and its laws, which I think is a wonderful way to spent the days during ones presence on earth ( or mars). Furthermore I like to have books with me on vacation  etc. to look up things and read and books are still very handy. Last but not least I recommend you the authors home page and his speeches on you tube; listen to the funny introduction when his host try to spell his name and pay attention to his humorous formulations.
294829
The major problem is the author is not using metric units ( why can't they use metric units at least in brackets even in the USA all scientific people use it by now..in the book.they still throw around with lbs and old fashioned acres........its makes the whole reading very heavy (even with a conversion table). Its a shame as otherwise it would have been good.