Home
Class 12
PHYSICS
The force of friction is doubled. Then c...

The force of friction is doubled. Then coefficient of friction `mu`

A

increases

B

increases twice

C

remain unaltered

D

`mu_s` decreases

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • FRICTION

    MBD PUBLICATION|Exercise QUISTION BANK|72 Videos

  • ELECTROMAGNETIC WAVES

    MBD PUBLICATION|Exercise QUESTION BANK|180 Videos

  • GRAVITATION

    MBD PUBLICATION|Exercise QUESTION BANK|219 Videos

Similar Questions

Explore conceptually related problems

Force of friction is a

How friction is reduced ?

A marble block of mass 2 kg lying on ice when given a velocity of 6 m//s is stopped by friction in 10 s. Then the coefficient of friction is -

A lift is moving upwards with a uniform velocity v in which a block of mass m is lying: The frictional force offered by the block when the coefficient of friction is mu will be

Define angle of friction.

A100 N force acts horizontally on a block of 10 kg placed on horizontal rough table of coefficient of friction mu=0.5g=10m//s^2 . What is the acceleration of the block ?

A 50 kg block rests on a rough horizontal surface. A force of 200 N is applied on the body. The block acquires a speed of 4 m//s , starting from rest in 2 seconds. The value of coefficient of friction is

If mu_k is the coefficient of kinetic friction, mu_r the coefficient of rolling friction and mu_s the coefficient of static friction, then

A horizontal force of 1.2 kg wt. is applied on a 1.5 kg block, which rests on a horizontal surface if the coefficient of friction is 0.3 find the acceleration produced in the block ?

A force of 100 gm wt. is required to pull a body weighing 1 kg over ice. The coefficient of friction is

MBD PUBLICATION-FRICTION-QUISTION BANK
  1. The force of friction is doubled. Then coefficient of friction mu

    Text Solution

    |

  2. Is it reasonable to expect the coefficient of friction to exceed unity...

    Text Solution

    |

  3. It is known that polishing a surface beyond a certain limit increases ...

    Text Solution

    |

  4. Why do we slip on a muddy road ?

    Text Solution

    |

  5. State whether the following assertion is true or false : When a person...

    Text Solution

    |

  6. Is a large brake on a bicycle wheel more effective than a small one ?

    Text Solution

    |

  7. Why are vehicles provided with wheels and- ball bearing ?

    Text Solution

    |

  8. Comment on the statement ‘friction is necessary evil’.

    Text Solution

    |

  9. It is easier to than push.

    Text Solution

    |

  10. How does a lubricant help in decreasing friction ?

    Text Solution

    |

  11. To slide a heavy box, we generally left it a bit to place a metallic p...

    Text Solution

    |

  12. Why has a horse to pull a cart harder during the first few steps of hi...

    Text Solution

    |

  13. How do we save petrol when the tyres of the motor cycle are fully infl...

    Text Solution

    |

  14. Write down the dimensional formula of force of friction

    Text Solution

    |

  15. Write down the mathematical expression for coefficient of static frict...

    Text Solution

    |

  16. Write down the mathematical expression for coefficient of kinetic fric...

    Text Solution

    |

  17. Write down the mathematical expression for coefficient of static frict...

    Text Solution

    |

  18. What is the slope of the graph attained by plotting of dynamic frictio...

    Text Solution

    |

  19. What is static friction ?

    Text Solution

    |

  20. What is kinetic friction ?

    Text Solution

    |

  21. Discuss the statement “friction is a necessary evil”.

    Text Solution

    |