Question 3: A specimen having a circular section (D. = 30 mm, t = 1 mm) and length, L = 200 mm is subjected to torque, T = 30 N-m resulting in angle of twist of 60 degrees. a. Determine shear stress, T b. Determine shear strain, Y c. Determine shear modulus, G T Known test langh Angle of twist (

A thin triangular plate PQR forms a right angle at point Q. During deformation, point Q moves to the left by u = 2.6 mm and upward by v = 5.2 mm to new position Q'. Determine the shear strain y at corner Q' after deformation. Use c = 620 mm, a = 29°, and B = 61°. 41 Answer: y = i urad

Q#7: The strains measured with a 60⁰ strain rosette are ϵa = R/3 x 10^-6 , ϵb= - R/2 x 10^-6 , and ϵc = R/8 x 10^-6 . Using E = 200 GPa and µ = 0.3, find the principal stresses and their directions. Show  the results on a sketch of a properly oriented element. Use  R=980 Note : For Clearance of Question Please Refer to Attached Picture.