A. fluids in motion
B. breaking point
C. plastic deformation of solids
D. rupture stress
E. none of the above
A. reaction of any smooth surface with which the body is in contact
B. reaction of a rough surface of a body which rolls on it without slipg
C. reaction at a point or an axis, fixed in space, around which a body is con-strained to turn
D. all of the above
E. none of the above
A. 0°
B. 30°
C. 45°
D. 60°
E. 90°
A. principal stress
B. tensile stress
C. compressive stress
D. shear stress
E. no stress
A. 0°
B. 30°
C. 45°
D. 60°
E. 90°.
A. half
B. same amount
C. double
D. one-fourth
E. four times
A. nature of surfaces
B., area of contact
C. shape of the surfaces
D. ail of the above.
E. A. and B. above