Category: Engineering Mechanics

A. not a replace them by a single force
B. to replace them by a single force
C. to replace them by a single force through C.G.
D. to replace them by a couple
E. to replace them by a couple and a force

A. energy
B. mass
C. momentum
D. angle
E. speed

A. density of metal can’t be determined
B. metal is twice as dense as water
C. metal will float in water
D. metal is twice as dense as unknown fluid
E. none of the above

A. 0°
B. 30°
C. 45°
D. 60°
E. 90°.

A. kg m2
B. m4
C. kg/m2
D. kg/m
E. m2/kg

A. the floor is smooth, the wall is rough
B. the floor is rough, the wall is smooth
C. the floor and wall both are smooth surfaces
D. the floor and wall both are rough surfaces
E. will be in equilibrium under all conditions

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. 2n-3
B. n-l
C. ‘2n-l
D. n – 2
E. 3n-2.
where n = number of joints in a frame

A. more inclined when moving
B. less inclined when moving
C. more inclined when standing
D. less inclined when standing
E. none of the above

A. three forces acting at a point will be in equilibrium
B. three forces acting at a point can be represented by a triangle, each side being proportional to force
C. if three forces acting upon a patticle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium
D. if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two
E. none of the above