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: Blocks on turntable with friction = hard problem

  1. Feb 13, 2009 #1
    Two identical blocks are tied together with a string and placed along the same radius of a turntable that is spinning about its center. The inner block is 4 cm from the center and the outer block is 5 cm from the center. The coefficient of static friction between the turntable and the blocks is ┬Ás = 0.71, and the string is taut.

    a) What is the maximum angular frequency such that neither block slides?

    b) Now suppose that the blocks each have a mass m = 34 g. For the value of w you just found, what is the tension in the string?


    i worked on part A for a long time and found the answer to be 12.4 rad / s

    i am having problems calculating part B, can anyone point me in the right direction, thanks
     
  2. jcsd
  3. Feb 13, 2009 #2

    LowlyPion

    User Avatar
    Homework Helper

    I get a different answer for part a).

    Perhaps you can show your work?
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook