This question is for rock mechanics

This question is for rock mechanics, and there is no additional information other than what is mentioned in the question

9. The U.S. Bureau of Mineralercoring method is used to measure stresses to a borehole drilled perpendicularly to a tunnel wall. The site of the mea. surement (the plane of the measuring pins) is 5 deep in a test gallery 10 ft in diameter. The measuring borchole has a diameter of 1.25 in. The first pair of buttons is horizontal, pair 2 is oriented to counterclockwise from button par l; button pair 3 is 120 counterclockwise from pair 1. Deformations were measured as a result of overcoring as follows: pair I moved outward 3 x 10-in.: pair 2 moved outward 2 * 10-in.; and pair three moved outward I * 10-in. If E = 2 * 10 psi and >= 0.20, determine the stress components in the plane perpendicular to the borehole, and the major and minor marmal stresses in this plane and their directions. (Assume the initial stress parallel to the borehole is insignificant.) 9. The U. S. Bureau of Mines overcoring method is used to measure stresses in a borehole drilled perpendicularly to a tunnel wall. The site of the mea- surement (the plane of the measuring pins) is 5 ft deep in a test gallery 10 ft in diameter. The measuring borehole has a diameter of 1.25 in. The first pair of buttons is horizontal, pair 2 is oriented 60 counterclockwise from button pair 1; button pair 3 is 120 counterclockwise from pair 1. Deformations were measured as a result of overcoring as follows: pair 1 moved outward 3 X 10-3 in.; pair 2 moved outward 2 x 10-in.; and pair three moved outward 1 x 10-3 in. If E = 2 x 106 psi and v = 0.20, determine the stress components in the plane perpendicular to the borehole, and the major and minor normal stresses in this plane and their directions. (Assume the initial stress parallel to the borehole is insignificant.) 9. The U.S. Bureau of Mineralercoring method is used to measure stresses to a borehole drilled perpendicularly to a tunnel wall. The site of the mea. surement (the plane of the measuring pins) is 5 deep in a test gallery 10 ft in diameter. The measuring borchole has a diameter of 1.25 in. The first pair of buttons is horizontal, pair 2 is oriented to counterclockwise from button par l; button pair 3 is 120 counterclockwise from pair 1. Deformations were measured as a result of overcoring as follows: pair I moved outward 3 x 10-in.: pair 2 moved outward 2 * 10-in.; and pair three moved outward I * 10-in. If E = 2 * 10 psi and >= 0.20, determine the stress components in the plane perpendicular to the borehole, and the major and minor marmal stresses in this plane and their directions. (Assume the initial stress parallel to the borehole is insignificant.) 9. The U. S. Bureau of Mines overcoring method is used to measure stresses in a borehole drilled perpendicularly to a tunnel wall. The site of the mea- surement (the plane of the measuring pins) is 5 ft deep in a test gallery 10 ft in diameter. The measuring borehole has a diameter of 1.25 in. The first pair of buttons is horizontal, pair 2 is oriented 60 counterclockwise from button pair 1; button pair 3 is 120 counterclockwise from pair 1. Deformations were measured as a result of overcoring as follows: pair 1 moved outward 3 X 10-3 in.; pair 2 moved outward 2 x 10-in.; and pair three moved outward 1 x 10-3 in. If E = 2 x 106 psi and v = 0.20, determine the stress components in the plane perpendicular to the borehole, and the major and minor normal stresses in this plane and their directions. (Assume the initial stress parallel to the borehole is insignificant.)