Finding Maximum Weight on a Ramp with Coefficients of Friction

  • Thread starter Thread starter kari82
  • Start date Start date
  • Tags Tags
    Maximum Weight
Join the discussion
Registration is free. Start your own thread to ask a follow-up.
1 reply · 5K views
kari82
Messages
34
Reaction score
0
I have the solution of this problem, but I would like someone to give me some guidance on how to begin solving the problem. Thanks!

A 1520-N crate is to be held in place on a ramp that rises at 30.0° above the horizontal (see Fig. CH 5-6.15). The massless rope attached to the crate makes a 22.0° angle above the surface of the ramp. The coefficients of friction between the crate and the surface of the ramp are µk = 0.450 and µs = 0.650. The pulley has no appreciable mass or friction. What is the maximum weight w needed to hold this crate stationary on the ramp?

solution= 1380N
 
Attachments
  • f115g2_r.jpg
    f115g2_r.jpg
    8.4 KB · Views: 598
Physics news on Phys.org
draw a free body diagram of the crate. vector sum of horizontal forces as well as vertical forces will be zero. from this u can find w.