4-46. The 90-kg man climbs up the ladder and stops at theposition shown after he senses that the ladder is on the vergeof slipping. Determine the inclination e of the ladder if thecoefficient of static friction between the friction pad A and theground is u, = 0.4. Assume the wall at Bis smooth. The centerof gravity for the man is at G. Neglect the weight of the ladder.3mFoo

Answered: Image /qna-images/answer/027e38ab-60cf-4179-956d-15e1a267b38c.jpg

Answered: 4-46. The 90-kg man climbs up the…

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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F8-4. If the coefficient of static friction at contact points A and B is u, = 0.3, determine the maximum force P that can be applied without causing the 100-kg spool to move. 06 m 0.9 m B.
A handwritten solution would be well and good with fbd.
The 447-N force is applied to the 94-kg block, which is stationary before the force is applied. Determine the magnitude and direction of the friction force Fexerted by the horizontal surface on the block. The force is positive if to the right, negative if to the left. P = 447 N 33° = 0.60 H = = 0.46 Answer: F = i N
4-47. The Y0-kg man climbs up the ladder and stops at the position shown after he senses that the ladder is on the verge of slipping. Determine the coefficient of static friction between the friction pad at A and ground if the inclination of the ladder is e = 60° and the wall at B is smooth. The center of gravity for the man is at G. Neglect the weight of the ladder. 3m Foo
8-26. The refrigerator has a weight of 180 lb and rests on a tile floor for which us = 0.25. If the man pushes horizontally on the refrigerator in the direction shown, determine the smallest magnitude of horizontal force needed to move it. Also, if the man has a weight of 150 lb, determine the smallest coefficient of friction between his shoes and the floor so that he does not slip. -3 ft- F15 ft- 4 ft 3t
The man pushes on the roller with force P through a handle that connects to the central axle of the roller. If the coefficient of static friction between the 43-lb roller and the floor is g = 0.16, determine the maximum force P that can be applied to the handle, so that roller rolls on the ground without slipping. Assume the roller to be a uniform cylinder. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point, and proper unit. Take g = 32.2 ft/s². Your Answer: Answer 30° units 1.5 ft
Q3/ If the coefficients of friction between brake am and cylinder C is 0.3 and between cylinder Cand the floor is 0.12, determine the minimum force P required to hold the cylinder from the rotati on. Note that the weight of the cylinder Cis 100 Ib and neglect the weight of the brake arm? 5-15 Higd 20" 10" 0" 1500n-b
5) The crate at a 10° incline has a mass of 350 kg and is subjected to a towing force P acting at a 20° angle with the horizontal. If the coefficient of static friction is µs = 0.5, determine the magnitude of P needed start impending motion. Given: M = 350 kg = 20 deg = 10 deg Us = 0.5 m g = 9.81
Determine the maximum value of weight W which may be applied without causing the 50-lb block to slip. The coefficient of static friction between the block and the plane is µ, = 0.2, and between the rope and the drum D µ; = 0.3. D W 1 Add file
The fork lift has a weight of 2,400 lb and a center of gravity at G. If the rear wheels are powered, whereas the front wheels are free to roll, determine the maximum number of 300-lb crates the fork lift can push forward. The coefficient of static friction between the wheels and the ground is μw = 0.4 and between the each crate and the ground μc = 0.35. 2.5 ft 1.25 ft -3.50 ft- XIXIX

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