A. bodies having relative motion
B. two dry surfaces
C. two lubricated surfaces
D. solids and liquids
E. electrically charged particles
Correct Answer: bodies having relative motion ✔
Last Updated: January 25, 2019
Related MCQs
- The effort required to lift a load W on a screw jack with helix angle a and angle of friction <j) is equal to __________?
- The maximum frictional force which comes into play when a body just begins to slide over another surface is called__________?
- A single force and a couple acting in the same plane upon a rigid body__________?
- The co-efficient of friction depends upon__________?
- If n = number of members andy = number of joints, then for a perfect frame, n =__________?
- A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to__________?
- A body moves, from rest with a constant acceleration of 5 m per sec. The distance covered in 5 sec is most nearly__________?
- Which of the following is the locus of a point that moves in such a manner that its distance from a fixed point is equal to its distance from a fixed line multiplied by a constant greater than one__________?
- The C.G. of a solid hemisphere lies on the central radius 3r__________?
- Which of the following is not the unit of energy__________?
- A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal__________?
- The C.G. of a right circular solid cone of height h lies at the following distance from the base__________?
- The C.G. of a plane lamina will not be at its geometrical centre in the case of a__________?
- The M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is__________?
- The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of__________?
- In ideal machines__________?
- In actual machines__________?
- A cable with a uniformly distributed load per horizontal meter run will take the following shape__________?
- The necessary condition for forces to be in equilibrium is that these should be__________?
- The algebraic sum of moments of the forces forming couple about any point in their plane is__________?
- A semi-circular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi-cricular disc and horizontal surface is \i. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will__________?
- Tangent of angle of friction is equal to__________?
- Limiting force of friction is the__________?
- Dynamic friction as compared to static friction is__________?
- Forces are called coplanar when all of them acting on body lie in __________?
- The unit of force in S.I. units is__________?
- A force acting on a body may__________?
- Effect of a force on a body depends upon __________?
- A force is completely defined when we specify__________?
- If a number of forces act simultaneously on a particle, it is possible __________?
- Which is the correct statement about law of polygon of forces ?
- Forces are called concurrent when their lines of action meet in__________?
- The unit of work or energy in S.I. units is__________?
- Which of the following is not the unit of pressure ?
- A pair of smith’s tongs is an example of the lever of__________?
- If three forces acting in different planes can be represented by a triangle, these will be in__________?
- 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__________?
- Which of the following is not the unit of power ?
- Which of the following do not have identical dimensions ?
- If two equal forces of magnitude P act at an angle 9°, their resultant will be__________?
- The unit of power in S.I. units is__________?