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!

Sand sample

  1. Mar 3, 2014 #1
    Hi,

    I was thinking of something: How are one supposed to calculate the moment needed for a scoop to scoop up a sample of e.g. sand? Does the classical p=mv work? Any ideas or comments?
     
  2. jcsd
  3. Mar 3, 2014 #2

    sophiecentaur

    User Avatar
    Science Advisor
    Gold Member

    It's not clear what you mean by your question; it is clearly in a particular context.
    P=mv is the momentum of a mass m with velocity v.
    A certain Impulse will be needed to accelerate a mass m to velocity v and Impulse is Force times the time it is applied. A small force takes more time to do the job than a large force. I think you may be referring to Impulse rather than the "moment" (=Momentum) in your post.

    If you are, in fact, scooping sand, then the scoop could provide less force over a longer time than for, as an example, a golf club, which may have contact for a small fraction of a second. These are general comments and a more useful answer could be given if there were more detail about the actual sampling job you have in mind.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Sand sample
  1. Tire and sand? (Replies: 0)

  2. Flow rate of sand (Replies: 1)

Loading...