Engineering Mechanics

A. angle between normal reaction and the resultant of normal reaction and the limiting friction
B. ratio of limiting friction and normal reaction
C. the ratio of minimum friction force to the friction force acting when the body is just about to move
D. the ratio of minimum friction force to friction force acting when the body is in motion
E. ratio of static and dynamic friction

A. maximum
B. minimum
C. zero
D. infinity
E. same as the force applied

A. area of contact
B. shape of surfaces
C. strength of surfaces
D. nature of surface
E. all of the above

A. 20 kg, – ve sense
B. 20 kg, + ve sense
C. 10 kg, + ve sense
D. 10 kg, – ve sense
E. 45 kg, + ve sense

A. along the plane
B. horizontally
C. vertically
D. at an angle equal to the angle of friction to the inclined plane
E. unpredictable

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 slipping
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. 2.5 cm
B. 3.0 cm
C. 4.0 cm
D. 5.0 cm
E. 2.0 cm

A. r/2
B. 2r/3
C. r/A
D. 3r/2
E. 3r/A

A. 0.5 cm
B. 1.0 cm
C. 1.5 cm
D. 2.5 cm
E. 0.25 cm

A. catenary
B. parabola
C. hyperbola
D. elliptical
E. circular arc