A. balance each other
B. cannot balance each other
C. produce moment of a couple
D. are equivalent
E. none of the above
Related Mcqs:
- If three forces acting in one plane upon a rigid body, keep it in equilibrium, then they must either__________________?
A. meet in a point
B. be all parallel
C. at least two of them must meet
D. all the above are correct
E. none of the above - The product of either force of couple with the arm of the couple is called________________?
A. resultant couple
B. moment of the forces
C. resulting couple
D. moment of the couple
E. none of the above - 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 - Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction__________________?
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 body of weight W on inclined plane of a being pulled up by a horizontal force P will be on the point of motion up the plane when P is equal to___________________?
A. W
B. W sin (a + $)
C. Wtan(a + <|))
D. Wan(a-)
E. Wtana - 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 - The resultant of the following three couples 20 kg force, 0.5 m arm, $ ve sense 30 kg force, 1 m arm, – ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be_________________?
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 force acting on a body may_______________?
A. introduce internal stresses
B. balance the other forces acting on it
C. retard its motion
D. change its motion
E. all of the above - 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 - 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
