In the figure, a ladder of length L = 14 m and mass m = 45 kg leans against a slick (frictionless) wall. The ladder's upper end is at height h = 10 m above the pavement on which the lower end rests (the pavement is not frictionless). The ladder's center of mass is L/3 from the lower end. A firefighter of mass M-72 kg climbs the ladder. Let the coefficient of static friction μ, between the ladder and the pavement be 0.46. How far (in percent) up the ladder must the firefighter go to put the ladder on the verge of sliding? Frictionless Number i Units System. Fire- fighter com Fire- fighter F Ladder com Mg -Ladder a/3 x
In the figure, a ladder of length L = 14 m and mass m = 45 kg leans against a slick (frictionless) wall. The ladder's upper end is at height h = 10 m above the pavement on which the lower end rests (the pavement is not frictionless). The ladder's center of mass is L/3 from the lower end. A firefighter of mass M-72 kg climbs the ladder. Let the coefficient of static friction μ, between the ladder and the pavement be 0.46. How far (in percent) up the ladder must the firefighter go to put the ladder on the verge of sliding? Frictionless Number i Units System. Fire- fighter com Fire- fighter F Ladder com Mg -Ladder a/3 x
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter10: Rotational Motion
Section: Chapter Questions
Problem 30P
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
Transcribed Image Text:In the figure, a ladder of length L = 14 m and mass m = 45 kg leans against a slick (frictionless) wall. The ladder's upper end is at height h
= 10 m above the pavement on which the lower end rests (the pavement is not frictionless). The ladder's center of mass is L/3 from the
lower end. A firefighter of mass M-72 kg climbs the ladder. Let the coefficient of static friction μ, between the ladder and the
pavement be 0.46. How far (in percent) up the ladder must the firefighter go to put the ladder on the verge of sliding?
Frictionless
Number i
Units
System.
Fire-
fighter
com
Fire-
fighter
F
Ladder
com
Mg
-Ladder
a/3
x
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