Answer the following: Q3A trolley of mass 80 kg is being pulled by along a horizontal path. Figure 3.1shows the force, T, exerted on the trolley and the frictional force, F, actingbetween the trolley and the path. The acceleration due to gravity is 9.8 m/s².cos 37° = 0.798 and sin 37° = 0.602.(Please note: You should write all your answers to three decimal places.)a)(1)(ii)(iii)F37°Calculate the kinetic friction coefficient.TFigure 3.1.In order to keep the trolley moving at a constant speed of 0.85 m/s, aforce of 120 N is exerted at an angle of 37° to the horizontal. Calculate thefrictional force, F.Calculate the work done to pull the trolley a distance of 75 m.(iv) After travelling 75 m, the trolley is no longer pulled. Explain why the trolleycontinues to roll forward and calculate the distance you would expect thetrolley to travel. State any assumptions you have made in determining thisdistance.

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(Please note: You should write all your answers to three decimal places.) a) (i) (ii) (iii) F Figure 3.1. 37° Calculate the kinetic friction coefficient. T In order to keep the trolley moving at a constant speed of 0.85 m/s, a force of 120 N is exerted at an angle of 37° to the horizontal. Calculate the frictional force, F. Calculate the work done to pull the trolley a distance of 75 m.

(Please note: You should write all your answers to three decimal places.) a) (i) (ii) (iii) F Figure 3.1. 37° Calculate the kinetic friction coefficient. T In order to keep the trolley moving at a constant speed of 0.85 m/s, a force of 120 N is exerted at an angle of 37° to the horizontal. Calculate the frictional force, F. Calculate the work done to pull the trolley a distance of 75 m.

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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Concept explainers

Forming and Shaping

Metal forming is a category of metalworking process through which the material can be given the desired shape and size by subjecting it to plastic deformation, where the component undergoes bulk deformation process upon application of loads. Unlike the shearing and machining process, the material does not undergo up to a failure point as indicated in the stress-strain curve. Hence, the stresses induced during the forming process are greater than yield strength but less than the failure strength of the material. The process does not lead to the loss of material, so it can be said to be an economical process. During forming, the material is subjected to tensile forces, compressive forces, bending, and shearing loading conditions. The material should possess the property of ductility to undergo the forming process.

Question

Answer the following:

Q3
A trolley of mass 80 kg is being pulled by along a horizontal path. Figure 3.1
shows the force, T, exerted on the trolley and the frictional force, F, acting
between the trolley and the path. The acceleration due to gravity is 9.8 m/s².
cos 37° = 0.798 and sin 37° = 0.602.
(Please note: You should write all your answers to three decimal places.)
a)
(1)
(ii)
(iii)
F
37°
Calculate the kinetic friction coefficient.
T
Figure 3.1.
In order to keep the trolley moving at a constant speed of 0.85 m/s, a
force of 120 N is exerted at an angle of 37° to the horizontal. Calculate the
frictional force, F.
Calculate the work done to pull the trolley a distance of 75 m.
(iv) After travelling 75 m, the trolley is no longer pulled. Explain why the trolley
continues to roll forward and calculate the distance you would expect the
trolley to travel. State any assumptions you have made in determining this
distance.

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