Forces are called concurrent when their lines of action meet in_______________?

Related Mcqs:

1. The forces, which meet at one point, but their lines of action do not lie in a plane, are called______________?

   A. coplanar non-concurrent forces
   B. non-coplanar concurrent forces
   C. non-coplanar non-concurrent forces
   D. intersecting forces
   E. none of the above

2. The magnitude of two forces, which when acting at right angle produce resultant force of VlOkg and when acting at 60° produce resultant of Vl3 kg. These forces are____________________?

   A. 2 and V6
   B. 3 and 1 kg
   C. V5andV5
   D. 2 and 5
   E. none of the above

3. If a rigid body is in equilibrium under the action of three forces, then_______________?

   A. these forces are equal
   B. the lines of action of these forces meet in a point
   C. the lines of action of these forces are parallel
   D. B. and C. above
   E. none of the above

4. Forces are called coplanar when all of them acting on body lie in________________?

   A. one point
   B. one plane
   C. different planes
   D. perpendicular planes
   E. different points

5. The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is as per the principle of__________________?

   A. forces
   B. independence of forces
   C. dependence of forces
   D. balance of force
   E. resolution of forces

6. Which is the correct statement about law of polygon of forces ?

   A. if any number of forces acting at a point can be represented by the sides
   of a polygon taken in order, then the forces are in equilibrium
   B. if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon, then the forces are in equilibrium
   C. if a polygon representing forces acting at a point is closed then forces are in equilibrium
   D. if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon taken in order, then the forces are in equilibrium
   E. none of the above

7. According to principle of transmissibility of forces, the effect of a force upon a body is_______________?

   A. maximum when it acts at the center of gravity of a body
   B. different at different points in its line of action
   C. the same at every point in its line of action
   D. minimum when it acts at the C.G. of the body
   E. none of the above

8. The algebraic sum of moments of the forces forming couple about any point in their plane is________________?

   A. equal to the moment of the couple
   B. constant
   C. both of above are correct
   D. both of above are wrong
   E. none of the above

9. The necessary condition for forces to be in equilibrium is that these should be_______________?

   A. coplanar
   B. meet at one point ;
   C. both A. and B. above
   D. all be equal
   E. something else

10. Two non-collinear parallel equal forces acting in opposite direction________________?

    A. balance each other
    B. constitute a moment
    C. constitute a couple
    D. constitute a moment of couple
    E. constitute a resultant couple