1. Not finding help here? Sign up for a free 30min 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!

Why do 2 crates pulled together have the same acceleration?

  1. Sep 5, 2016 #1
    Hi. I was given the classic problem of a woman pulling crate 1 on a frictionless surface with a force F, which is attached to crate2 behind it with a rope. crate 1=6kg, crate 2= 4kg, and it says crate 1 has an acceleration of 2.5m/s^2...
    One question asks for the acceleration of crate 2, and the answer is 2.5m/s^2, but I'm confused as to why they have the same acceleration. Could it be proved with force diagrams or with math?
    Thanks


    Attempt:
    None. It's a conceptual problem, so there's no work to show
     
  2. jcsd
  3. Sep 5, 2016 #2

    Nidum

    User Avatar
    Science Advisor
    Gold Member

    If the rope is of fixed length and pulled tight what is velocity of crate 2 compared to crate 1 ? Less than , greater than or equal to ?
     
  4. Sep 7, 2016 #3

    CWatters

    User Avatar
    Science Advisor
    Homework Helper

    What happens if the acceleration is not the same for both crates?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Why do 2 crates pulled together have the same acceleration?
Loading...