Home
Class 12
PHYSICS
Very first moving vehicles are given str...

Very first moving vehicles are given streamline shape. Why ?

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

Vehicles are streamlined to reduce

Vehicles are streamlined to reduce

Diamond dazzles more than glass cut into the same shape. Why?

A vehicle of mass 500 kg is moving with a velocity of 15ms −1 . It is brought to rest by a retarding force. Find the distance moved by the vehicle before coming to rest, if the sliding friction between the tyres and the road is 3000N.

A perfectiges of a given mass is heated first in a small vessel and then in a large vessel, The P-T curves are :

Why diamond dazzles, not glass of the same shape?

When a man jumps from a running vehicle his head goes forward towards the engine, Why?

Why in a curvilinear motion of a vehicle the person sitting in it gets an outward jerk?

A curve of radius 60m on the national highway is properly banked for vehicles moving at 20ms. Find the angle of banking.

MBD PUBLICATION-FRICTION-QUISTION BANK
  1. Name one factor upon which force of friction depends.

    Text Solution

    |

  2. How do you define force of friction ?

    Text Solution

    |

  3. Very first moving vehicles are given streamline shape. Why ?

    Text Solution

    |

  4. Is friction independent of actual area of contact ?

    Text Solution

    |

  5. Is friction a self adjusting force ?

    Text Solution

    |

  6. How coefficient of friction and angle of repose are related ?

    Text Solution

    |

  7. If the coefficient of friction is √3 , the angle of friction:

    Text Solution

    |

  8. The magnitude of limiting friction F is directlyto the magnitude of th...

    Text Solution

    |

  9. The ratio between force of limiting friction to the normal reaction gi...

    Text Solution

    |

  10. Coefficient of friction between two surfaces in contact is always less...

    Text Solution

    |

  11. Friction is a evil.

    Text Solution

    |

  12. Co-efficient of rolling friction isthan that of sliding friction.

    Text Solution

    |

  13. Co-efficient of kinetic friction depends on theof the body.

    Text Solution

    |

  14. Force offriction does not depend on the -area of contact.

    Text Solution

    |

  15. Lubricants are used toforce of friction.

    Text Solution

    |

  16. The co-efficient of static friction is equal to where theta is angle o...

    Text Solution

    |

  17. Force of friction arises due toof the irregularities of the two surfa...

    Text Solution

    |

  18. Force of static frictionon the nature and condition of the two surface...

    Text Solution

    |

  19. Differentiate static and kinetic friction.

    Text Solution

    |

  20. Distinguish between sliding and rolling friction.

    Text Solution

    |