Q2: - The ladder and the person weigh 30 lb and 180 lb, respectively. The center of mass of the 12-ft ladder is at its midpoint. The angle Assume that the wall is smooth on the ladder. (a) If what is the magnitude of the friction force exerted on the ladder by the floor as shown in fig 2? (b) What minimum coefficient of static friction between the ladder and the floor is necessary for the person to be able to climb to the top of the ladder without slipping?
Q2: - The ladder and the person weigh 30 lb and 180 lb, respectively. The center of mass of the 12-ft ladder is at its midpoint. The angle Assume that the wall is smooth on the ladder. (a) If what is the magnitude of the friction force exerted on the ladder by the floor as shown in fig 2? (b) What minimum coefficient of static friction between the ladder and the floor is necessary for the person to be able to climb to the top of the ladder without slipping?
International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter7: Dry Friction
Section: Chapter Questions
Problem 7.72P
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Question
![Q2: - The ladder and the person weigh 30 lb and 180 lb, respectively. The center of mass of the 12-ft
ladder is at its midpoint. The angle Assume that the wall is smooth on the ladder.
(a) If what is the magnitude of the friction force exerted on the ladder by the floor as shown in fig 2?
(b) What minimum coefficient of static friction between the ladder and the floor is necessary for the
person to be able to climb to the top of the ladder without slipping?
160
mm
20 ft/s
140 mm
200
40
mm
mm
10
| 40 mm
120
mm
Fig 1
Fig 2
Fig 3](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe453cad7-ea05-4be2-b172-f9b06811a24e%2F3791cf24-023a-4bfe-88e8-b0c8599f377e%2Fjzhkjj_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Q2: - The ladder and the person weigh 30 lb and 180 lb, respectively. The center of mass of the 12-ft
ladder is at its midpoint. The angle Assume that the wall is smooth on the ladder.
(a) If what is the magnitude of the friction force exerted on the ladder by the floor as shown in fig 2?
(b) What minimum coefficient of static friction between the ladder and the floor is necessary for the
person to be able to climb to the top of the ladder without slipping?
160
mm
20 ft/s
140 mm
200
40
mm
mm
10
| 40 mm
120
mm
Fig 1
Fig 2
Fig 3
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