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!

Gravity problem please help

  1. Feb 12, 2008 #1
    1. 4. A stone is dropped from the edge of a cliff and falls into the sea 72 meters below. The stone has a mass of 2 kg: air resistance on the stone may be assumed to have a constant value of 2 Newton’s. (gravity strength on Earth = 10 N/kg; a mass of 1 kg needs a 10 Newton force to lift it)
    D) What acceleration will this resultant force produce on the stone?

    Hi i have been assigned this but cannot find my notes on it and I am stuck could anyone please help?
  2. jcsd
  3. Feb 12, 2008 #2


    User Avatar
    Science Advisor
    Homework Helper

    Can you at least quote a relevant formula, e.g. one that will give you the acceleration from the forces? (Hint: Newton)
  4. Feb 12, 2008 #3
    Yes, use one of Newton's laws when thinking of what will give you the acceleration. Also think in terms of exactly what forces are acting on the object.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Gravity problem please help
  1. Gravity help please (Replies: 2)

  2. Gravity Help please (Replies: 13)