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.Management Sciences
Category: Applied Mechanics and Graphic Statics
If a body is lying on a plane whose inclination with the horizontal is less than the angle of friction, then___________________?
1) a force is required to move the body upwards
2) a force is required to move the body downward
3) the body will not be in equilibrium
The correct answer is?
A. only (1)
B. only (2)
C. both (1) and (2)
D. both (1) and (3)
The maximum pull in a cable, carrying a uniformly distributed load and supported at two ends which are at the same level, is at_____________________?
A. supports
B. quarter span
C. mid span
D. none of the above
The unit of rotational inertia of a body in C.G.S system is________________?
A. cm4
B. kg-cm2
C. gm-cm2
D. gm-cm3
A light rope is loaded with many equal weights at equal horizontal intervals. The points of suspension on the rope lie on a_____________________?
A. parabola
B. catenary
C. cycloid
D. ellipse
Select the correct statement ?
A. The body centrode rolls on the space centrode
B. The space centrode rolls on the body centrode
C. Both body and space centrodes may role on each other
D. The body centrode never touches space centrode
The shape of a suspended cable for a uniformly distributed load over it is__________________?
A. circular
B. parabolic
C. catenary
D. cubic parabola
A 2 m long ladder rests against a wall and makes an angle of 30° with the horizontal floor. Where will be the instantaneous center of rotation when the ladder starts slipping ?
1) 1.0 in from the wall
2) 1.732 m from the wall
3) 1.0 m above the floor
4) 1.732 m above the floor
The correct answer is?
A. (1) and (3)
B. (1) and (4)
C. (2) and (3)
D. (2) and (4)
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