1ogonal coordinate (optional) 1. A plane is represented as X + 2y – 2z = 1 in an orthogonal xyz coordinate system, find its normal direction, and its angle with x, y and z coordinate. Vectors m-

Algebra and Trigonometry (MindTap Course List)
4th Edition
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Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Vectors In Two And Three Dimensions
Section9.CR: Chapter Review
Problem 8CC
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Side
av 4
B. Repetition: stress at an orthogonal coordinate (optional)
1. A plane is represented as x + 2y – 2z = 1 in an orthogonal xyz coordinate system,
find its normal direction, and its angle withx, y and z coordinate.
2.
Vectors m=i +3j -2k and n= 2i +j- k, find the angle of these two vectors;
try to rotate vector n only to p so vectors m and p are perpendicular each other, find pin
as form of p = ai +3j- 2k, and then identify a vector t which will be normal to both m
and p.
3. Stress af a certain point of soil in depth, with reference to orthogonal xyz coordinate
system, could be represented in a matrix as given:
2 =0
0 = 3
0 = 4
4- MPa
a) Calculate its invariants.
b) Find the prineipal directions and its stresses
c) Find the stress vector and the magnitude of normal stress on a plane that pass
through the point and parallel to the plane: r+ 2y= 2z= 1
14
Transcribed Image Text:Side av 4 B. Repetition: stress at an orthogonal coordinate (optional) 1. A plane is represented as x + 2y – 2z = 1 in an orthogonal xyz coordinate system, find its normal direction, and its angle withx, y and z coordinate. 2. Vectors m=i +3j -2k and n= 2i +j- k, find the angle of these two vectors; try to rotate vector n only to p so vectors m and p are perpendicular each other, find pin as form of p = ai +3j- 2k, and then identify a vector t which will be normal to both m and p. 3. Stress af a certain point of soil in depth, with reference to orthogonal xyz coordinate system, could be represented in a matrix as given: 2 =0 0 = 3 0 = 4 4- MPa a) Calculate its invariants. b) Find the prineipal directions and its stresses c) Find the stress vector and the magnitude of normal stress on a plane that pass through the point and parallel to the plane: r+ 2y= 2z= 1 14
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