The static friction

  1. Home

- Online Exam Test Papers | - MCQs[multiple choice questions and answers ] | - Mock Test Papers | - Practice Papers | - Sample Test Papers |

Question:
The static friction

1.bears a constant ratio to the normal reaction between the two surfaces

2. is independent of the area of contact, between the two surfaces

3.always acts in a direction, opposite to that in which the body tends to move

4. all of the above

Posted Date:-2021-03-26 07:10:54

More MCQS Questions and answers

  1. A framed structure is imperfect, if the number of members are __________ (2j - 3).
  2. According to the law of moments, if a number of coplaner forces acting on a particle are in equilibrium, then
  3. Onejoule is equal to
  4. The motion of a particle round a fixed axis is
  5. The rate of change of displacement of a body is called
  6. The rate of doing work is known as
  7. The total energy possessed by a system of moving bodies
  8. A differential pulley block has larger and smaller diameters of 100 mm and 80 mm respectively. Its velocity ratio is
  9. A rubber ball is dropped from a height of 2 m. If there is no loss of velocity after rebounding, the ball will rise to a height of
  10. Non-coplaner concurrent forces are those forces which
  11. The principle of transmissibility of forces states that, when a force acts upon a body, its effect is
  12. The total momentum of a system of masses (i. e. moving bodies) in any one direction remains constant, unless acted upon by an external force in that direction. This statement is called
  13. A couple produces
  14. A machine having an efficiency less than 50%, is known as
  15. A weight of 1000 N can be lifted by an effort of 80 N. If the velocity ratio is 20, the machine is
  16. Concurrent forces are those forces whose lines of action
  17. For a self locking machine, the efficiency must be
  18. In ideal machines, mechanical advantage is __________ velocity ratio.
  19. The acceleration of a particle moving with simple harmonic motion is __________ at themean position.
  20. The angular velocity (in rad / s) of a body rotating at N revolutions per minute is
  21. The centre of gravity of a semi-circle lies at a distance of __________ from its base measured along the vertical radius.
  22. The maximum efficiency of a lifting machine is
  23. The minimum force required to slide a body of weight W on a rough horizontal plane is
  24. The point, through which the whole weight of the body acts, irrespective of its position, is known as
  25. The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.
  26. The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction in which the force acts. This statement is known as
  27. The resultant of the two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then
  28. The static friction
  29. The unit of work in S.I. units is
  30. The velocity of a particle moving with simple harmonic motion is __________ at the mean position.
  31. When the spring of a watch is wound, it will possess
  32. Whenever a force acts on a body and the body undergoes a displacement, then
  33. Which of the following are vector quantities?
  34. Which of the following is a scalar quantity?
  35. Which of the following statement is correct?
Search
R4R Team
R4Rin Top Tutorials are Core Java,Hibernate ,Spring,Sturts.The content on R4R.in website is done by expert team not only with the help of books but along with the strong professional knowledge in all context like coding,designing, marketing,etc!