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: Help with Newton's Laws (AP Physics B)

  1. Sep 13, 2011 #1
    1. The problem statement, all variables and given/known data

    they keep telling me it is a simple problem, ive actually done harder problems of the same thing, but i just dont seem to get this one.

    A 15kg block sits on a 25kg block. The coefficient of static friction between the blocks is 0.408 and there is no friction between the 25kg block and the floor. Find the maximum net force that can be applied to the 25kg blcok before the 15kg blcok begins to slide.

    2. Relevant equations


    3. The attempt at a solution

    I think i need to find out at which point the exerted force surpases the friction force (because it is what holds the 2 blocks together).

    This didn't work exactly how i wanted and it didn't give me the right answer.
  2. jcsd
  3. Sep 13, 2011 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper
    Education Advisor

    What force causes the top block to accelerate? What's the maximum acceleration the top block can have?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Similar Threads for Help Newton's Laws
Young's double slit experiment help
Charged plates Physics help