I am a teacher and need help creating exam problems. Please recommend more incorrect answers to the following problem but do not explain your logic. At a point in a body subjected to plane strain, the strains are εx = 240 με, εy = 370 με, and γxy = –360 μrad. Determine the magnitude of the maximum in-plane shear strain at the point.

I am a teacher and need help creating exam problems. Please recommend more incorrect answers to the following problem but do not explain your logic. A silicone rubber [E = 2.60 MPa, G = 0.87 MPa] wristband has an initial length of 94 mm and a width of 11 mm. If the wearer imparts a normal stress of 470 kPa in the length direction while putting it on, what is the corresponding change in width?

I am a teacher and need help creating exam problems. Please recommend more incorrect answers to the following problem but do not explain your logic. At a point subjected to plane stress on the surface of a drill bit, the stresses are σx = 20 MPa, σy = 0 MPa, and τxy = 100 MPa. Determine the magnitude of the maximum in-plane shear stress at the point.

I am a teacher and need help creating exam problems. Please recommend more incorrect answers to the following problem but do not explain your logic. At a point in a body subjected to plane strain, the strains are εx = –230 με, εy = –260 με, and γxy = 540 μrad. Determine normal strain εt at the point for a counterclockwise coordinate rotation of 40°.

Create 5 variations of the following problem but do not show the answers. At a point subjected to plane stress on the surface of a structural member, the stresses are σx = 55 MPa, σy = 75 MPa, and τxy = 30 MPa. Determine the magnitude of the absolute maximum shear stress at the point.

I am a teacher and need help creating exam problems. Please recommend more incorrect answers to the following problem but do not explain your logic. At a point in a body subjected to plane strain, the strains are εx = 490 με, εy = 770 με, and γxy = –170 μrad. Determine normal strain εn at the point for a clockwise coordinate rotation of 75°.

I am a teacher and need help creating exam problems. Please recommend more incorrect answers to the following problem but do not explain your logic. At a point in a body subjected to plane strain, the strains are εx = 160 με, εy = –330 με, and γxy = 110 μrad. Determine normal strain εt at the point for a clockwise coordinate rotation of 70°.

I am a teacher and need help creating exam problems. Please recommend more incorrect answers to the following problem but do not explain your logic. At a point subjected to plane stress on the surface of a ladder rung, the stresses are σx = 0.55 MPa, σy = 0 MPa, and τxy = –1.03 MPa. Determine the angle θs corresponding to the orientation of the maximum in-plane shear stress at the point.

I am a teacher and need help creating exam problems. Please recommend more incorrect answers to the following problem but do not explain your logic. At a point subjected to plane stress on the surface of a socket extension, the stresses are σx = –19 ksi, σy = 0 ksi, and τxy = –5 ksi. Determine the magnitude of the maximum in-plane shear stress at the point.

I am a teacher and need help creating exam problems. Please recommend more incorrect answers to the following problem but do not explain your logic. At a point in a body subjected to plane strain, the strains are εx = 428 με, εy = 712 με, and γxy = 305 μrad. Determine the average normal strain at the point.