A. nature of surfaces
B. area of contact
C. shape of the surfaces
D. ail of the above.
E. A. and B. above
A. 1:2
B. 1 : 3
C. 1 : 4
D. 1 : 2.5
E. 1 : 2.25
A. plasticity
B. ductility
C. elasticity
D. malleability
E. drawabihty
A. tangent of angle between normal reac-tion and the resultant of normal reac-tion and the limiting friction
B. ratio of limiting friction and normal reaction
C. the friction force acting when the body is just about to move
D. the friction force acting when the body is in motion
E. dynamic friction
A. same
B. double
C. half
D. four times
E. one fourth
A. longitudinal stress and longitudinal strain
B. longitudinal stress and lateral stress
C. lateral stress and longitudinal stress
D. lateral stress and lateral strain
E. none of the above
A. meet in a point
B. be all parallel
C. at least two of them must meet
D. all the above are correct
E. none of the above