2.) see photo for details Work Example 8.1 on page 390 of your textbook, but replacingthe book values with the following values:The box dimensions are 0.9 m wide x 0.5 m high, the magnitudeof the pushing force is 90 N and the angle of the push is 35 deg.The push is applied at 0.26 m above the ground. The coefficientof static friction is μ = 0.32. 8EXAMPLEP = 80 N30°/0.2 m8.1-0.4 m196.2 N(b)Fig. 8-7-0.4 mNcThe uniform crate shown in Fig. 8-7a has a mass of 20 kg. If a forceP= 80N is applied to the crate, determine if it remains in equilibrium.The coefficient of static friction is μ = 0.3.P = 80 NTouren que30%Solving,0.2 m-0.8 mJQESSES (a)Equations of Equilibrium.+ ΣΕ = 0;+1ΣΕ = 0;(+ΣΜΟ = 0;LSOLUTIONFree-Body Diagram. As shown in Fig. 8-7b, the resultant normalforce Nc must act a distance x from the crate's centerline in order tocounteract the tipping effect caused by P. There are three unknowns,F, Nc, and x, which can be determined strictly from the three equationsof equilibrium.80 cos 30° N - F = 0-80 sin 30° N + Nc 196.2 N = 0nica80 sin 30° N(0.4 m) - 80 cos 30° N(0.2 m) + Nc(x) = 0F = 69.3 NNc = 236.2 Nx = -0.00908 m = -9.08 mmwake ofSince x is negative it indicates the resultant normal force acts(slightly) to the left of the crate's centerline. Also, the maximumfrictional force which can be developed at the surface of contact isFmax = MsNc = 0.3(236.2 N) = = 70.9 N. Since F = 69.3 N < 70.9 N,the crate will not slip, although it is very close to doing so.DetAn idealizeSOLUTIONis shown incenter ofFree-BoLudoorEqua+2

Answered: Image /qna-images/answer/25673fbd-73b5-41c4-b70b-a63d242d9b06.jpg

Work Example 8.1 on page 390 of your textbook, but replacing the book values with the following values: The box dimensions are 0.9 m wide x 0.5 m high, the magnitude of the pushing force is 90 N and the angle of the push is 35 deg. The push is applied at 0.26 m above the ground. The coefficient of static friction is μ = 0.32.

Work Example 8.1 on page 390 of your textbook, but replacing the book values with the following values: The box dimensions are 0.9 m wide x 0.5 m high, the magnitude of the pushing force is 90 N and the angle of the push is 35 deg. The push is applied at 0.26 m above the ground. The coefficient of static friction is μ = 0.32.

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 7.50P: The block of weight W is pulled by the force P inclined at the angle to the horizontal. Find the...

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