Home
Class 12
PHYSICS
Coefficient of kinetic friction and coef...

Coefficient of kinetic friction and coefficient of static friction between two blocks is `mu_(k)` and `mu_(s)` respectively. In general

A

`mu_(s) lt mu_(k)`

B

`mu_(s) gt mu_(k)`

C

`mu_(s)=mu_(k)`

D

None of these

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • LAWS OF MOTION

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (SECTION-A)|65 Videos

  • LAWS OF MOTION

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (SECTION-B)|44 Videos

  • LAWS OF MOTION

    AAKASH INSTITUTE ENGLISH|Exercise Example|24 Videos

  • KINETIC THEORY

    AAKASH INSTITUTE ENGLISH|Exercise EXERCISE (ASSIGNMENT) SECTION - D Assertion - Reason Type Questions|10 Videos

  • MAGNETISM AND MATTER

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION D)|26 Videos

Similar Questions

Explore conceptually related problems

The coefficient of static friction may be

The coefficient of static friction between two surfaces depend on

Define the coefficient of static friction and kinetic friction.

In Fig the block are at rest a force of 10 N act on the block of 4 kg mass .The coefficient of staic friction and the coefficient of kinetic friction are mu_(s) = 0.2 and mu_(s) = 0.15 for both the surface in contact The magnitudeof frcition force acting between the surface of contact between the 2 kg and 4 kg block in this situation is

A force of 750 N is applied to a block of mass 102 kg to prevent it from sliding on a plane with an inclination angle 30^@ with the horizontal. If the coefficients of static friction and kinetic friction between the block and the plane are 0.4 and 0.3 respectively, then the frictional force acting on the block is

A force F=2t is spplied at t=0 sec to the block of mass m placed on a rough horizontal surface. The coefficient of static and kinetic friction between the block and surface are mu_S and mu_k rspectively. Which of the following graphs best represents the acceleration vs time of the block (mu_Sgtmu_k) ?

A force F=2t is spplied at t=0 sec to the block of mass m placed on a rough horizontal surface. The coefficient of static and kinetic friction between the block and surface are mu_S and mu_k rspectively. Which of the following graphs best represents the acceleration vs time of the block (mu_Sgtmu_k) ?

Two block of same mass'm' are joined with an dideal spring of spring constant k and sept on a rough surface as shown in figure. The spring is initially unstretched and coefficient of friction between the blocks and horizontal surface is mu and 2 mu respectively. What should be the maximum speed of block 'A' such that the block 'B' does not move ?

A block of mass m rests on a rough horizontal plane having coefficient of kinetic friction mu_(k) and coefficient of static friction mu_(s) . The spring is in its natural, when a constant force of magnitude P=(5mu_(k)mg)/(4) starts acting on the block. The spring force F is a function of extension x as F=kx^(2).( Where k is spring constant ) (a) Comment on the relation between mu_(s) and mu_(k) for the motion to start. (b) Find the maximum extension in the spring ( Assume the force P is sufficient make the block move ) .

Determine the maximum horizontal force F that may be applied to the plank of mass m for which the solid sphere does not slip as it begins to roll on the plank. The sphere has a mass M and radius R . The coefficient of static and kinetic friction between the sphere and the plank are mu_(S) and mu_(k) respectively.

AAKASH INSTITUTE ENGLISH-LAWS OF MOTION-EXERCISE
  1. Maximum force of friction is called

    Text Solution

    |

  2. Static friction between two surfaces

    Text Solution

    |

  3. Coefficient of kinetic friction and coefficient of static friction bet...

    Text Solution

    |

  4. The limiting value of static friction between two contact surfaces is

    Text Solution

    |

  5. A block of mass m slides down an inclined plane which makes an angle t...

    Text Solution

    |

  6. A block of mass 10 kg, moving with acceleration 2m//s^(2) on horizonta...

    Text Solution

    |

  7. If angle of repose is phi, the coefficient of static friction between ...

    Text Solution

    |

  8. Which of the following is a self adjusting force?

    Text Solution

    |

  9. Two blocks of masses 2 kg and 4 kg are hanging with the help of massle...

    Text Solution

    |

  10. A man of mass m is standing in an elevator moving downward with an acc...

    Text Solution

    |

  11. A vehicle is moving on a road with an acceleration a=20 m//s^(2) as sh...

    Text Solution

    |

  12. In the given arrangement all surfaces are smooth. What acceleration sh...

    Text Solution

    |

  13. A block of mass m kg is kept on a weighing machine in an elevator. If ...

    Text Solution

    |

  14. A trolley is falling freely on inclined plane as shown in the figure. ...

    Text Solution

    |

  15. A block of mass m is kept on horizontal turn table at x distance from...

    Text Solution

    |

  16. If trolley accelerates horizontally with acceleration a then bob is di...

    Text Solution

    |

  17. Select correct statement regarding pseudo force :-

    Text Solution

    |

  18. What force should be applied on the wedge so that block over it does n...

    Text Solution

    |

  19. A particle of mass 2 kg is moving in circular path with constant speed...

    Text Solution

    |

  20. A particle is in uniform circular motion, then its velocity is perpend...

    Text Solution

    |