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!

Shear modulus of rubber

  1. Nov 10, 2006 #1
    A child slides across a floor in a pair of rubber-soled shoes. The friction force acting on each foot is 25 N, the cross-sectional area of each foot is 20 cm2, and the height of the soles is 5.0 mm. Find the horizontal distance traveled by the sheared face of the sole. The shear modulus of the rubber is 3.0 x 10^6 Pa.

    I used F/A=S*(deltaX/n) plugging in 20/14=3x10^6(deltaX/.5) but didn't get the right answer.
  2. jcsd
  3. Nov 10, 2006 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    I don't undersrtand where you are getting your numbers. F is 25N; A is 20cm^2; G is 3*10^6 N/m^2, and L is 5 mm.

    Convert the length units to meters.

    25/0.0020 = 3(10^6)x/0.005
    x = 2.8*10^-5m
    x = .028 mm
    Hmm, seems small, better check (I don't have a good feel for pascals, having been born and bred in the USA).
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Shear modulus of rubber
  1. Shear Modulus (Replies: 4)

  2. Shear modulus (Replies: 3)

  3. Shear Modulus (Replies: 6)