Three blocks with masses ma = 25 kg, mg = 50 kg,and mc = 100 kg are connected with a flexible cable thatpasses over a frictionless pulley as shown in Fig.Determine the force P required to start moving the blocksif the coefficient of friction is 0.50 between blocks A and B,0.35 between block B and the surface, and 0.26 betweenblock C and the surface.P

Given: mA=25kgmB=50kgmC=100kgμA=0.50μB=0.35μC=0.26

Answered: Three blocks with masses ma = 25 kg, mg…

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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An arrangement of three boxes is shown in figure below. Box A weighs 25 N and rests on an inclined plane, while box B weighs 50 N and rests on a horizontal plane. The coefficient of friction between box A and the inclined plane is 0.3, and between box B and the horizontal plane is 0.4. The pulleys are all frictionless. Determine the range of weight of box C for which no motion will occur. Consider both sliding and tipping of boxes A and B. 0.6 m 0.75 m 25 N 5 A 4 C pome 0.8 m 0.6 m 50 N B 1.2 m
A 60 Kg crate is resting on top of a 45 Kg crate as shown in figure below. The top crate is attached to a wall by a cord, and a rope attached to the bottom crate passes around two fixed pegs. The coefficient of friction between the two crates is 0.4; between the crate and the floor is 0.5; and between the rope and the pegs is 0.3. Determine the minimum force Pmin needed to cause move the bottom crate. 60 kg 45 kg
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).

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