Recent content by zwtipp05

  1. Z

    Long vs Short Bows: Does Force Depend on String Length?

    I think a bow and arrow has to do with the elasticity of the wood. The longer string allows for a longer piece of wood which can be bent further, giving more force.
  2. Z

    Solve Water Slide Problem: Initial Speed 0.54m/s, Height 3.2m

    Is that all the info given in the question? You can use conservation of energy to find the final velocity of the person, but from there I'm not sure what it is asking for.
  3. Z

    Force Analysis of an Elevator Moving Upward

    https://www.physicsforums.com/showthread.php?t=94379
  4. Z

    Find Initial Separation d for Mass-Spring System: Energy & Force | 4245 N/m

    You found the vertical distance h that is traversed, what they are asking for the the distance d along the incline it travels. You have the y-component of the distance, now you have to calculate the hypoteneuse which is d. You did everything right, you just didn't take the final step.
  5. Z

    Admissions Need Help Deciding What to Do in Terms of Applying to Colleges

    Choose your college based on your major and then based on other things. There's no reason to go to NYU (or any college for that matter) and major in something they aren't good at. I'm not bashing any college nor do I know anything about NYU, just pick a college that fits with what you want to...
  6. Z

    Schools Where do you attend university?

    The campus itself is very nice especially for being in the middle of the city. The surrounding area isn't the best, but as long as you're not stupid about it, you'll be safe. I'm only taking one aerospace class this semester, but my professor, Larry Rekekopp, is great. He goes a little...
  7. Z

    Completely stuck on projectile motion prob

    Have you learned about momentum and impulse yet? If so this is a simple problem. The ball is initially at rest so it's initial momentum is zero. THe change in momentum is the impulse F*dt=m*v cancel the masses to get: a*dt=v Solve for v and then it's a simple matter of finding the components.
  8. Z

    Schools Where do you attend university?

    I'm at the University of Southern California majoring in Aerospace Engineering. I'm from Ohio too, so I was a bit angry about that Penn State game, but what can you do. At least one of my teams will make it to the Rose Bowl
  9. Z

    Continuous Random variable Problem

    Do you know how to find expected value? If you find the expected value, you can find the profit. There appears to be no need to use the binomial distribution, in fact, you cannot use it here since you do not have bernoulli trials.
  10. Z

    Solve Ball Drop Problem: Find Initial Velocity

    You should use T instead of T+1 for the second ball since it is dropped one second after ball one.
  11. Z

    Programs Selecting Major: Undecided or Engineering?

    You can always declare with one of those majors and take the introductory engineering class along with math and general education requirements. That's basically what's going on wiht my schedule this semester even though I'm pretty much set on my major. Besides, it's normally very easy to...
  12. Z

    Help With AP Physics C | Struggling to Understand

    Try as many problems as you can and have someone work out the problems so you can follow the tought process. If you see it done enough it might just click, or at least you'll have a slightly easier time with the problems
  13. Z

    Tension and other assorted fun

    Look at the resultant Forces F=-kx not much else I can help you with without you showing what you've done. then we can point out any problems in what you're doing.
  14. Z

    Solving a Simple Force Problem: Acceleration and Apparent Weight Calculation

    You can find a in your apparent weight equation using the total mass of the system (880 kg) and the upward force (9450 N) F=ma
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