ch12-p040 - 40 Let x be the horizontal distance between the...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Substituting the values given in the problem statement (with 22 7.58 m aL h =− = ), the fraction of ladder climbed is () ( / 3 ) (9.3 m)(0.53)(72 kg 45 kg) (7.58 m /3)(45 kg) (72 kg)(7.58 m) 0.848 85%. s hM m am x aM a μ +− == =≈ 40. Let x be the horizontal distance between the firefighter and the origin O (see figure) that makes the ladder on the verge of sliding. The forces on the firefighter + ladder system consist of the horizontal force w F from the wall, the vertical component py F and the horizontal component px F of the force p F G on the ladder from the pavement, and the downward gravitational forces Mg and mg , where M and m are the masses of the firefighter and the ladder, respectively. Since the system is in
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

Ask a homework question - tutors are online