Home
Class 11
PHYSICS
Sand is thrown on trakcs covered with sn...

Sand is thrown on trakcs covered with snow to

A

increase friction

B

decrease friction

C

make friction zero

D

make friction infinite

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Crown of teeth is covered by:

A stone is thrown vertically upward with an initial velocity of 40ms^-1 . Taking g = 10ms^-2 , find the maximum height reached by the stone. What is the net displacement and the total distance covered by the stone ?

Lungs are covered by:

A dice is thrown three times and the sum of the thrown numbers in 15. Find the probability for which number 4 appears in first throw.

Gill cover is absent in

A car covers a distance of 89.1 km in 2.2 hours. What is the average distance covered by it in 1 hour?

MBD-MODEL PAPER 2-EXERCISE
  1. Why two holes are made to empty an oil tin?

    Text Solution

    |

  2. Coefficient of friction depends on

    Text Solution

    |

  3. Sand is thrown on trakcs covered with snow to

    Text Solution

    |

  4. We slip easily on a rainy day because coefficient of friction

    Text Solution

    |

  5. Lubricant is used in machine to

    Text Solution

    |

  6. Angle of friciton (theta) and angle of repose (a) are related as

    Text Solution

    |

  7. Two water droplets merge with each other to form large droplet. In thi...

    Text Solution

    |

  8. Surface tension depends on

    Text Solution

    |

  9. When there are no external forces ,the shape of a liquid drop is deter...

    Text Solution

    |

  10. The surface of the water in contact with the glass wall is

    Text Solution

    |

  11. If common salt is dissolved in water, then the surface tension of salt...

    Text Solution

    |

  12. Define and explain dimensional formula and dimensional equation.

    Text Solution

    |

  13. What do you mean by positive and negative acceleration?

    Text Solution

    |

  14. The horizontal range of a projectile fired at an angle of 15^@ is 50 m...

    Text Solution

    |

  15. A heavier and lighter body have the same momentum. Show that lighter b...

    Text Solution

    |

  16. Explain why:- it is easier to pull a lawn mower than to push it.

    Text Solution

    |

  17. An electron and a proton have equal momentum. Which has more kinetic e...

    Text Solution

    |

  18. Show that for an isolated system, centre of mass moves with a uniform ...

    Text Solution

    |

  19. Mass of a body is 20 kg at the surface of earth. AT what depth does it...

    Text Solution

    |

  20. Why do we prefer steel to manufacture a spring?

    Text Solution

    |