1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Fineing PSI to Lift Me

  1. May 7, 2013 #1
    I am trying to find the psi needed to lift me off the ground at an acceleration of 1m/s/s so i started with the equation f=ma. For acceleration I added f=m(1m/s/s) but i need to cancel gravity out, so I took 9.8m/s/s + 1m/s/s = 10.8m/s/s. I thought it would work because 1m/s/s was the acceleration I wanted to go. For mass I added my mass in kg. I finally had F=63.5(10.8). I found 685.8n was the force needed. I converted 685.8n to 154.17flb. The area I need the force to be on is 1.953in2. To find the psi, I did 154.17 / 1.953 = 78.9 psi. I am not sure this is right. I am a thirteen year old boy in 7th grade. Any guidance would be wonderful.
     
  2. jcsd
  3. May 7, 2013 #2

    mfb

    User Avatar
    2017 Award

    Staff: Mentor

    The concept is right, and the numbers can be checked by a computer.
     
  4. May 7, 2013 #3

    russ_watters

    User Avatar

    Staff: Mentor

    Psi of what though? Is there a real-world project you are hoping to do?
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Loading...