Recent content by Jacobpm64

  1. J

    Need Developmental Mathematics Textbook

    The books just seem to be getting better and better (and they're cheap too)! I too loved the style of "Introducing Mathematics". It had a lot of neat quotes and cartoons that seemed entertaining and attention-grabbing.
  2. J

    Need Developmental Mathematics Textbook

    I've checked those out eumyang, and they look more like traditional textbooks (which I like). The older versions are around $10 from what I see on amazon too, so that is nice as well. Thanks!
  3. J

    Need Developmental Mathematics Textbook

    Yep, I am beginning graduate school in mathematics this fall, and it is really a shame that I have never gotten the chance to take a course in history of math.
  4. J

    Need Developmental Mathematics Textbook

    Okay cool. I only got to glance at the first few pages on amazon, but it seems like something I might even like to read. Thanks.
  5. J

    Need Developmental Mathematics Textbook

    Are we speaking of this one? https://www.amazon.com/dp/1840460113/?tag=pfamazon01-20
  6. J

    Need Developmental Mathematics Textbook

    Hey all. I have a friend who has been out of high school for quite a while, and he is wanting to learn a little math (just basics). I was wondering if anyone knew where I could find a good book for someone who is not familiar with much math at all. I am guessing we would need to start...
  7. J

    Finding Displacements for forced oscillations

    okay, so, using your advice.. I have, as you said.. x_0 = A\cos(\phi) + \frac{F+mg}{m\omega_0^2} Therefore, our displacement from equilibrium is: x - x_0 = A[cos(\omega_0 t - \phi) - cos\phi] - \frac{F}{m\omega_0^2} Still though, when we have time t = t_0 , x = x_2 . This...
  8. J

    Finding Displacements for forced oscillations

    Homework Statement A particle of mass m is at rest at the end of a spring (force constant = k) hanging from a fixed support. At t = 0 , a constant downward force F is applied to the mass and acts for a time t_0 . Show that, after the force is removed, the displacement of the mass from...
  9. J

    What is the Force and Speed at Different Points on a Rollercoaster?

    Okay, I see. All of my answers will be in terms of R . Can anyone give me any hints on how to find v_B and h_B ? Thanks!
  10. J

    What is the Force and Speed at Different Points on a Rollercoaster?

    Homework Statement A block of mass m = 1.62 kg slides down a frictionless incline as in the figure(link at the bottom). The block is released at a height of h = 3.91 m above the bottom of the loop. (a) What is the force of the inclined track on the block at the bottom (point A)? (b) What...
  11. J

    Verticle projectile motion and terminal velocities

    neat. I think that's everything I'll need unless I run into another problem. Thanks a lot. Edit: Solved it!.. Wooooo!
  12. J

    Verticle projectile motion and terminal velocities

    Oh no, I got that one. I meant the first equation ( I am having trouble getting the terminal velocity into the differential equation). I also notice that you lost time somewhere :) I got the 2nd equation though. Chain rule is cool :)
  13. J

    Verticle projectile motion and terminal velocities

    How did you get the first equation? I can't get that.
  14. J

    Verticle projectile motion and terminal velocities

    I actually realized a couple things last night while I was trying to sleep. First off, since my retarding force is proportional to the square of the velocity, just making it negative (like I had been doing for problems where the retarding force was proportional to the velocity itself) will...
  15. J

    Verticle projectile motion and terminal velocities

    Homework Statement A particle is projected vertically upward in a constant gravitational field with an initial speed v_0. Show that if there is a retarding force proportional to the square of the instantaneous speed, the speed of the particle when it returns to the initial position is...