Home
Class 12
PHYSICS
A particle is thrown with escape velocit...

A particle is thrown with escape velocity `v_(e)` from the surface of earth. Calculate its velocity at height 3 R :-

A

`cong 9.25` km/s

B

`cong 5.6` km/s

C

`cong 11.2` km/s

D

`cong 4.3` km/s

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

What is the value of escape velocity of a body lying on the surface of earth?

What is the escape velocity from a black hole ?

A projectile of mass m is thrown vertically up with an initial velocity v from the surface of earth (mass of earth = M). If it comes to rest at a height h, the change in its potential energy is

A particle is projected with a velocity v so that its range on a horizontal plane is twice the greatest height attained. If g is acceleration due to gravity, then its range is

There is crater of depth R//100 on the surface of the moon (raduis R ). A projectile is fired vertically upwards from the crater with a velocity, which is equal to the escape velocity v from the surface of the moon. The maximum height attained by the projectile, is :

A bullet is fired vertically upwards with a velocity upsilon from the surface of a spherical planet when it reaches its maximum height, its acceleration due to the planet's gravity is (1)/(4)th of its value at the surface of the planet. If the escape velocity from the planet is V_("escape") = upsilon sqrt(N) , then the value of N is : (ignore energy loss due to atmosphere).

When a particle is projected from the surface of earth its mechanical energy and angular momentum about center of earth at all time are constant. Q. A particle of mass m is projected from the surface of earth with velocity v_(0) at angle 0 with horizontal suppose h be the maximum height of particle from surface of earth and v its speed at that point then v is v_(0)cos0

A body is projected vertically upward from the surface of the earth, then the velocity-time graph is:-

The earth is assumed to be a sphere of radius R. A platform is arranged at a height R from the surface of the earth. The escape velocity of a body from this platform is fu, where v is its escape velocity from the surface of the earth the value of f is ..........

"The value of the escape velocity v_e for a stationary body on the surface of a planet is directly proportional to the mass and the radius of the planet”. Is this statement true? If not, correct it and write it.

ALLEN -GRAVITATION-EXERCISE 2
  1. A plenet moving along an elliptical orbit is closest to the sun at a d...

    Text Solution

    |

  2. A spherical planet far out in space has a mass M(p) and diameter D(p)....

    Text Solution

    |

  3. A geostationary satellite is orbiting the earth at a height of 5R abov...

    Text Solution

    |

  4. The height a which the weight of a body becomes 1//16th its weight on ...

    Text Solution

    |

  5. Which one of the following plots represents the variation of the gravi...

    Text Solution

    |

  6. If v(e) is escape velocity and v(0), is orbital velocity of satellite ...

    Text Solution

    |

  7. A particle is thrown with escape velocity v(e) from the surface of ear...

    Text Solution

    |

  8. A black hole is an object whose gravitational field is so strong that ...

    Text Solution

    |

  9. Dependence of intensity of gravitational field (E) of earth with dista...

    Text Solution

    |

  10. Kepler's third law states that square of period revolution (T) of a pl...

    Text Solution

    |

  11. A satellite S is moving in an elliptical orbit around the earth. The m...

    Text Solution

    |

  12. A remote-sensing satellite of earth revolves in a circular orbit at a ...

    Text Solution

    |

  13. Find the velocity of a satellite at height 80 km from earth. If the ra...

    Text Solution

    |

  14. At what height from the surface of earth the gravitation potential and...

    Text Solution

    |

  15. The ratio of escape velocity at earth (v(e)) to the escape velocity at...

    Text Solution

    |

  16. Starting from the centre of the earth having radius R, the variation o...

    Text Solution

    |

  17. A satellite of mass m is orbiting the earth (of radius R) at a height ...

    Text Solution

    |

  18. Find out energy required (in Giga Joule) to escape a space shuttle of ...

    Text Solution

    |

  19. The acceleration due to gravity at a height 1km above the earth is the...

    Text Solution

    |

  20. Two astronauts are floating in gravitational free space after having l...

    Text Solution

    |