Given the following, answer the 2 subproblems A 25-kg package, initially at rest, is being pushed to the right by applying a force P on corner A in the direction shown in the figure. At the instant shown,corner C is already 0.250 m to the right of edge E of the platform. Assume that the coefficients of non-sliding (static) and sliding (kinetic) friction betweenthe package and the platform are μ = 0.40 and μ = 0.25, respectively.0.900 m20⁰0.600 m0.250 m 1. Which of the following gives the most ideally constructed force diagram of the package? Note: In this diagram, N is the single equivalent force thatideally replaces the effect of contact surface DE to the package.A.C₁A.B.10.450D.0.900 m19.450 m0.600 m0.600 m0.250mB. PD.0.900m10.450 mW0.900 m10.450 m0.600 m2. Which of the following sets of equilibrium equations for the package is CORRECT?EF: P cos 20-f=0ΣFy: P sin 20-W+N = 0Mc:-(P cos 20) (0.6) (P sin 20) (0.9) + W (0.45) Nx = 00.600 m0.250 mΣFx:P sin 20+ f = 0EF: P cos 20-W+N = 0Mc:-(P sin 20) (0.6) (P cos 20) (0.9) + W (0.45) Nx = 0EF:P cos 20 - f = 0EF: P sin 20-W+N=0Mc:-(P cos 20) (0.6) (P sin 20) (0.9) + W (0.45)-N (0.25) = 0EF:P sin 20 + f = 0ΣFy: P cos 20-W+N=0Mc:-(P sin 20) (0.6) + (P cos 20) (0.9) + W (0.45)-N (0.25) = 0

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A 25-kg package, initially at rest, is being pushed to the right by applying a force P on corner A in the direction shown in the figure. At the instant shown, corner C is already 0.250 m to the right of edge E of the platform. Assume that the coefficients of non-sliding (static) and sliding (kinetic) friction between the package and the platform are μ = 0.40 and μ = 0.25, respectively. 0.900 m D 0.600 m ► 0.250 m

A 25-kg package, initially at rest, is being pushed to the right by applying a force P on corner A in the direction shown in the figure. At the instant shown, corner C is already 0.250 m to the right of edge E of the platform. Assume that the coefficients of non-sliding (static) and sliding (kinetic) friction between the package and the platform are μ = 0.40 and μ = 0.25, respectively. 0.900 m D 0.600 m ► 0.250 m

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.3P: Two identical chairs, each weighing 14 lb, are stacked as shown. The center of gravity of each chair...

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