9.27 The ladder and the person weigh 371b and 200lb, respec- tively. The center of mass of the 12-ft ladder is at its midpoint. The angle a -29°. Assume that the wall exerts a negligible fric- tion force on the ladder. (a) If x = 4 ft, what is the magnitude of the friction force exerted on the ladder by the floor? (b) What minimum coefficient of static friction between the lad- der and the floor is necessary for the person to be able to climb to the top of the ladder without slipping?

9.27 The ladder and the person weigh 371b and 200lb, respec- tively. The center of mass of the 12-ft ladder is at its midpoint. The angle a -29°. Assume that the wall exerts a negligible fric- tion force on the ladder. (a) If x = 4 ft, what is the magnitude of the friction force exerted on the ladder by the floor? (b) What minimum coefficient of static friction between the lad- der and the floor is necessary for the person to be able to climb to the top of the ladder without slipping?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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