A system of copianar forces acting on a rigid body can be reduced to________________?

Related Mcqs:

1. A system of copianar forces is in equilibrium when___________________?

   A. force polygon closes
   B. funicular polygon closes
   C. both force polygon” and funicular polygon close
   D. all the forces are concurrent

2. A rigid body is in a stable equilibrium if the application of any force__________________?

   A. can raise the CG of the body but can not lower it
   B. tends to lower the CG of the body
   C. neither raises nor lowers the CG of the body
   D. none of above

3. If the resultant of two forces has the same magnitude as either of the force, then the angle between the two forces is____________________?

   A. 30°
   B. 45°
   C. 60°
   D. 120°

4. A body is dropped from a height of 100 m and at the same time another body is projected vertically upward with a velocity of 10 m/sec. The two particles will____________________?

   A. never meet
   B. meet after 1 sec
   C. meet after 5 sec
   D. meet after 10 sec

5. When a body slides down an inclined surface, the acceleration of the body is given by__________________?

   A. g
   B. gsinG
   C. g cos 6
   D. g tan 6

   where ‘g’ is acceleration due to gravity and 9 is the angle of inclination of surface with the horizontal

6. A symmetrical body is rotating about its axis of symmetry, its moment of inertia about the axis of rotation being 2 kg -m2 and its rate of rotation 2 revolutions/see. The angular momentum of the body in kg-m2/sec is_____________________?

   A. 4
   B. 6 7i
   C. 8TC
   D. 8

7. One Joule is equivalent to________________?

   A. 9.81 Newton – metre
   B. 1 Newton – metre
   C. 1 kg wt – metre
   D. 1 dyne – metre

8. One Newton is equivalent to________________?

   A. 1 kg-wt
   B. 9.81 kg-wt
   C. 981 dyne
   D. 1/9.81 kg-wt

9. In which of the following trusses, the method of substitution is required for determining the forces in all the members of the truss by graphic statics ?

   A. howe truss
   B. king post truss
   C. fink truss
   D. warren truss

10. The resultant of two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then_________________?

    A. P = R
    B. Q = R
    C. P = Q
    D. None of the above is correct