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: Block sliding down an incline plane with a cord connected to a cylinder.

  1. Oct 25, 2011 #1
    1. The problem statement, all variables and given/known data
    A cord connected at one end to a block which can slide on an inclined plane has its other end wrapped around a cylinder resting in a depression at the top of the plane as shown in the figure. Determine the speed of the block after it has traveled 1.70 m along the plane, starting from rest for the following circumstances.


    (a) Assume there is no friction.
    (b) Assume the coefficient of friction between all surfaces is μ = 0.035. [Hint: First determine the normal force on the cylinder, and make any reasonable assumptions needed.]

    2. Relevant equations

    3. The attempt at a solution
    Where should I start? I know this has something to do with torque but I don't know how to calculate it.
  2. jcsd
  3. Oct 25, 2011 #2
    Draw a FBD for the block and put in all the forces acting on the block.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook