4. A ladder leans against a smooth wall, as shown in the tigure below. (By a "smooth" wall, we mean that the wall exerts on the ladder only a force that is perpendicular to the wall. There is no friction force). The ladder weighs 200 N and its center of gravity is 0.40L from the base, where L is the ladder's length. (aj How large a friction force must exİst at the base of the ladder if it is not to slip? (b) What is the necessary coefficient of static friction? 50 60 200 N 50 FN1 109°0 1010

4. A ladder leans against a smooth wall, as shown in the tigure below. (By a "smooth" wall, we mean that the wall exerts on the ladder only a force that is perpendicular to the wall. There is no friction force). The ladder weighs 200 N and its center of gravity is 0.40L from the base, where L is the ladder's length. (aj How large a friction force must exİst at the base of the ladder if it is not to slip? (b) What is the necessary coefficient of static friction? 50 60 200 N 50 FN1 109°0 1010

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 73P: A stepladder of negligible weight is constructed as shown in Figure P10.73, with AC = BC = = 4.00...

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Question

4. A ladder leans against a smooth wall, as shown in the figure below. (By a "smooth"
wall, we mean that the wall exerts on the ladder only a force that is perpendicular to the
wall. There is no friction force). The ladder weighs 200 N and its center of gravity is
0.40L from the base, where L is the ladder's length.
(aj How large a friction force must exist at the base of the ladder if it is not to slip?
(b) What is the necessary coefficient of static friction?
FN2
50°
200 N
FN1
E 0.40 L
109 0

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