You need to move a cubic crate across a rough floor. You pull the crate horizontally using a rope with force F, as shown in Figure 1. The weight of the crate is 700 lb;, its density is 180 lbm/ftº, and the coefficient of static friction between the crate and the floor is 0.57. Write an expression for the maximum static friction force fmas (in lb:) as a function of the mass m of the crate. Use Excel to plot fmax(7). • Calculate the average pressure of the crate on the floor, in psi. • Calculate the minimum force F necessary for the crate to start moving, in lb;. F
You need to move a cubic crate across a rough floor. You pull the crate horizontally using a rope with force F, as shown in Figure 1. The weight of the crate is 700 lb;, its density is 180 lbm/ftº, and the coefficient of static friction between the crate and the floor is 0.57. Write an expression for the maximum static friction force fmas (in lb:) as a function of the mass m of the crate. Use Excel to plot fmax(7). • Calculate the average pressure of the crate on the floor, in psi. • Calculate the minimum force F necessary for the crate to start moving, in lb;. F
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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![You need to move a cubic crate across a rough floor. You pull the crate horizontally using a
rope with force F, as shown in Figure 1. The weight of the crate is 700 lb:, its density is 180
lbm/fts, and the coefficient of static friction between the crate and the floor is 0.57.
Write an expression for the maximum static friction force fmax (in lb:) as a function of
the mass m of the crate. Use Excel to plot fmax(m).
Calculate the average pressure of the crate on the floor, in psi.
Calculate the minimum force F necessary for the crate to start moving, in lb;.
F
Figure 1. Moving a crate on a slope.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8a9b8dab-4984-46af-b373-f8d2e7703688%2F9f549f2c-97d9-4af9-9e58-39493c4422ad%2Ftg2d9nb_processed.png&w=3840&q=75)
Transcribed Image Text:You need to move a cubic crate across a rough floor. You pull the crate horizontally using a
rope with force F, as shown in Figure 1. The weight of the crate is 700 lb:, its density is 180
lbm/fts, and the coefficient of static friction between the crate and the floor is 0.57.
Write an expression for the maximum static friction force fmax (in lb:) as a function of
the mass m of the crate. Use Excel to plot fmax(m).
Calculate the average pressure of the crate on the floor, in psi.
Calculate the minimum force F necessary for the crate to start moving, in lb;.
F
Figure 1. Moving a crate on a slope.
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