Home
Class 12
PHYSICS
A glass wind screen whose inclination wi...

A glass wind screen whose inclination with the vertical can be changed in mounted on a car. The car moves horizontal with a speed of `2m//s`. At what angle `alpha` with the vertical should the wind screen be placed so that the rain drops falling vertically downwards with velocity `6m//s` strike the wind screen -perpendicularly?

Text Solution

Verified by Experts

`tan^(-1) (3)`
Promotional Banner

Topper's Solved these Questions

  • MOTION IN A PLANE

    AAKASH SERIES|Exercise QUESTION FOR DESCRIPTIVE ANSWER|7 Videos

  • MOTION IN A PLANE

    AAKASH SERIES|Exercise NUMERICAL EXERCISE (LEVEL -1)|33 Videos

  • MOTION IN A PLANE

    AAKASH SERIES|Exercise EXERCISE-3 (Circular Motion)|7 Videos

  • MOTION IN A STRAIGHT LINE

    AAKASH SERIES|Exercise very Short answer type question|15 Videos

Similar Questions

Explore conceptually related problems

A glass wind screen whose inclination with the vertical can be changed is mounted on a car. The moves horizontally with a speed of 2m//s . At what angle alpha with the vertical should the wind screen placed so that the rain drops falling vertically downwards with velcoity 6m//s strike the wind screen perpendicularly?

A boy is running on a horizontal road with a velocity of 5 m/s. At what angle should he hold his umbrella in order to protect him self from the rain if the rain is falling vertically with a velocity of 10 m/s?

A man is travelling at 10.8 kmph in a topless car on a rainy day. He holds an umbrella at an angle of 37° with the vertical so that he does not wet. If rain drops falls vertically downwards, what is the rain velocity ?

A man is travelling at 10.8 kmph in a topless car on a rainy day. He holds an umbrella at an angle of 37^(@) with the vertical so that he does not wet. If rain drops falls vertically downwards, what is the rain velocity ?

A car is moving on horizontal ground with a velocity vm s^(-1) with respect to earth. The driver of the car observes the rain to be falling vertically downwards with velocity 2vm s^(-1) . What is the velocity of the rain with respect to the ground ?

A man is travelling at 10.8 kmph in a topless car on a rainy day. He holds an umbrella at an angle of 37^@ with the vertical to protect himself from rain which is falling vertically downwards. What is the velocity of the rain drop ?

A person walking at 4 m/s finds rain drops falling slantwise into his face with a speed of 4 m/s at an angle of 30^(@) with the vertical . Show that the actual speed of the rain drops is 4 m/s .

Wind is blowing in the north direction at speed of 2 m/s which causes the rain to fall at some angle with the vertical. With what velocity should acyclist drive so that the rain appears vertical to him:

There are two incline planes AO and OB inclined at 45^(@) and 60^(@) respectively with the horizontal as shown in the figure. When a man moves on the inclined plane AO he is oberves that the rain drops are falling 45^(@) with the vertical. When the man moves on the inclined plane OB , he observes that the raindrops are falling vertically downward with the horizontal. Then actual speed of rain is

A car with a vertical windshield moves in a rain storm at a speed of 40 km/hr. The rain drops fall vertically with constant speed of 20 m/s. The angle at which rain drops strike the windshield is -

AAKASH SERIES-MOTION IN A PLANE-NUMERICAL EXERCISE (LEVEL -2)
  1. A shot is fired with a velocity u at a vertical wall whose distance f...

    Text Solution

    |

  2. An aeroplane flies horizontally at a height h at speed v. An anti - ca...

    Text Solution

    |

  3. Two guns situated at the top of a hill of height 10 m fire one shot ea...

    Text Solution

    |

  4. A particle projected with velcoity v(0) strikes at right alpha p...

    Text Solution

    |

  5. A particle moves in the x-y plane with a constant acceleration of...

    Text Solution

    |

  6. A particle moves in the x-y plane according to the law x=at, y=at (1-a...

    Text Solution

    |

  7. At the same instant two boy throw balls A and B from the window wit...

    Text Solution

    |

  8. A projectile aimed at a mark, which is in the horizontal plane through...

    Text Solution

    |

  9. Particles P and Q of mass 20 gm and 40 gm respectively are simultaneou...

    Text Solution

    |

  10. A particle is projected form point O on the ground with velocity u = s...

    Text Solution

    |

  11. A dip circle is at right angles to the magnetic meridian. What w...

    Text Solution

    |

  12. A glass wind screen whose inclination with the vertical can be changed...

    Text Solution

    |

  13. Two particles are projected from a point at the same instant with velo...

    Text Solution

    |

  14. Two boys simultaenously aim their guns at a brid sitting on a towe...

    Text Solution

    |

  15. A particle is projected with a velocity u making an angle theta with t...

    Text Solution

    |

  16. Figure shows a wire ring of radius a that is perpendicular to the gene...

    Text Solution

    |

  17. Two balls are projected from the same point in the direction inclined...

    Text Solution

    |

  18. Two particles are projected at the same instant from the same point ...

    Text Solution

    |

  19. A gun is kept on an inclined plane . The maximum ranges up and down ...

    Text Solution

    |