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: Discussion question from university physics

  1. Jun 23, 2013 #1
    1. The problem statement, all variables and given/known data
    When you drop an object from a certain height, it takes time T to reach the ground with no air resistance. If you dropped it from 3 times that height, how long (in terms of T) would it take to reach to the ground?

    2. Relevant equations


    3. The attempt at a solution

    i got T=sqrt2 and T=sqrt6 but now i'm stuck on how to set up the next proportion. Also would like to see how you started this one.
  2. jcsd
  3. Jun 23, 2013 #2


    User Avatar
    Homework Helper

    Perhaps you could consider the case of dropping a mass , on Earth where g = 9.8, from a height of 1 m and 3 m then 8 m and 24 m and see if that gives you any hints.
  4. Jun 23, 2013 #3
    thank you! I think the answer is sqrt3
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted