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: Pulley and inclined slope

  1. May 13, 2008 #1
    1. The problem statement, all variables and given/known data
    At the instant shown, the block is moving down the slope. What is the acceleration up the slope if the kinetic coefficient of friction is 0.4? the relevant diagram is attached and shows a pulley with one end connected to a wall and the other end pulling with a force of 42N at an angle of 35 deg connected to a mass of 13 kg.

    2. Relevant equations

    3. The attempt at a solution

    I've used F=u*mg*cos(A)-T*sin(B) and then used that to find a,

    where a=(F+T+Tcos(B)-mgsin(A))/m and F=force of friction, T=tension in pulley, A=angle of incline, B=angle of tension.

    Attached Files:

    Last edited: May 13, 2008
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted