A 30-kg box is sitting onan inclined surface asshown in Fig. P9-20.Ifthe coefficient of frictionbetween the box and the0.6 msurface is 0,50 and theangle a = 60the maximum force T forwhich the box will be inequilibrium.motion by tipping or byslipping?30 kg20determineIs impendingFig. P9-20

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Answered: A 30-kg box is sitting on an inclined…

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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A heavy cask (full of wine!) sits on an inclined plane. It is held in place by a rope that is attached to the cask and to a hook further up the inclined plane (at A). The rope comes off of the cask tangent to the cask. The mass of the cask is 40 kg, and the coefficient of static friction between the inclined plane and the cask is 0.25. What is the maximum value of 0 just before the cask begins to slip? Also, what is the tension in the rope when slipping is impending? Finally, if the inclined plane became icy, and the rope didn't break as the cask slipped, what would be remarkable about the lines of action of the W, N and T force vectors once equilibrium was re-established? 0.70 m 40
The 250 lb uniform crate (center of gravity at G) shown in the figure must be moved without tipping. The applied force P is horizontal. 1.5 ft 1.5 ft Determine: a. The largest coefficient of static friction between the crate and the floor that allows the crate to slide and 2.5 ft P. not tip 4.5 ft b. The corresponding magnitude of P 3.5 ft Include all needed FBD's to solve, and put units on your answers.
The 50-kg block as shown in figure is initially at rest on a horizontal plane. After that P was gradually increased from 0 to 150 N. What is the maximum static friction force? H₂ = 0.5 H₁ = 0.2 p
A vertical force P exerted on a lever AB holds a 20 kg mass M from falling, as shown in Fig 9-42. The coefficient of friction between the lever and the 300 mm drum is 1/4. Neglect the mass of the drum and lever, and determine the force P to hold the mass. Give soulution. (ans. P = 327 N)
1:E1 A docs.google.com/for Untitled Section Determine the force P required to lower the 40-kg cylinder at a slow steady speed. The coefficient or friction between the cord and its supporting surface is 0.30. (g-10 m/s³). 40 kg Your answer If (4, =0.4) then the o between the normal force N and the friction force F will be Your answer العربية الإنجليزية III
Part B Determine the maximum force P that can be applied without causing movement of the 110-kg crate that has a center of gravity at G. The coefficient of static friction at the floor is Us = 0.38. Assume that tipping occurs. Figure 1 of 1 Express your answer to three significant figures and include the appropriate units. 0.5 m, 0.5 m µA ? P = 110 0.8 m Submit Previous Answers Request Answer 1.5 m 1.2 m X Incorrect; Try Again; 3 attempts remaining Provide Feedback Next >
Question 1 of 4 View Policies Current Attempt in Progress 31 G Partly sunny < P Determine the force P required to force the 14° wedge under the 92-kg uniform crate which rests against the small stop at A. The coefficient of friction for all surfaces is 0.34. Answer: P = 1 2.1 m 92 kg eTextbook and Media 1.1 m A 14° a -/18 = CHO Attempts: 0 of 3 used Submit Answer UN
Question 3(a) The non uniform XYZ bar which weighs 155 kg has its centre of gravity G at a distance 4 m from X. This bar rests on a homogeneous crate P. The static coefficient of friction between the bar and the crate is 0.31 while the same between the crate and the floor is 0.22. Determine the mass of the lightest crate P (in kilograms) that can be used to support this non uniform bar in the position shown in Figure 3. The height of the crate is 4.32 m and the length of the bar is 8.59 m. 4 m 3 m - 1 m - Figure 3 Question 3(b) Take an example from everyday life where you can identify the application of the concepts we learn in the "Dry friction" module. Sketch this example and discuss about the effect of friction on that particular scenario. Sketch does not have to be drawn to a scale. (Description should be 250 words or less).
A 75-kg man starts climbing a ladder that leans If the weight of the against a wall as shown in Fig. ladder is negligible, determine how far up the ladder the man can climb before the ladder starts to slip if The coefficient of friction at the bottom end of the lad- der is increased to 0.40 by placing a piece of rubber between the ladder and the floor. 5 m 60°
Consider the situation shown where a 15-kg box is to be held on a steep vertical slope by a cord that can withstand 80 N. Will the box be held or will the cord snap (i.e. exceed 80 N)? The coefficient of static friction between the box and slope is 0.3. Note: more sophisticated methods exist but do a simple analysis using statics alone and a little reasoning. 60

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