Home
Class 12
PHYSICS
What is the weight of an astronaut while...

What is the weight of an astronaut while going up in a rocket with an acceleration 6 g if he actually weighs 75 kg, when stationary on the surface of the earth ? What is his apparent weight if the rocket falls down freely towards the earth ?

Text Solution

Verified by Experts

When the lift is moving upwards `W_1=m(g+a)therefore600=mg+ma`
When it is moving downwards `W_2=m(g-a)therefore360=mg-ma 600 +300 =mg + ma + mg - ma=2mg thereforemg=960/2= 480`
Real Weight of the mass =480N.
Promotional Banner

Topper's Solved these Questions

  • FRICTION

    MBD PUBLICATION|Exercise QUISTION BANK|72 Videos
  • KINETICS THEORY OF GASES

    MBD PUBLICATION|Exercise QUESTION BANK|264 Videos

Similar Questions

Explore conceptually related problems

A body weighs one Newton at the surface of the earth. What will be it’s weight at a height equal to half the radius of the earth ?

A man weight 60 kg-wt at the earth's surface The radius of the earth is 6400 km. At what height above the earth's surface, his weight becomes 30 kg wt ?

If a person goes (i) to a height equal to radius earth and below its surface what would be his weight in the two cases relative to earth ?

A spherical conductor having a charge of 100 muC is brought near another metallic sphere (of mass 36 kg) resting on earth's surface. What minimum distance of separation should be maintained, so as to lift up the metallic sphere with uniform speed. What happens, if the separation is more or less than the calculated value. (Take g =10 ms ^(-2 ) ) .

An apple of mass 250 gm falls from a tree. What is the approximate value of the acceleration of the earth towards the apple [G=6.67xx10^-11Nm^2//kg^2&R=6400km]

MBD PUBLICATION-GRAVITATION-QUESTION BANK
  1. A body weighs one Newton at the surface of the earth. What will be it’...

    Text Solution

    |

  2. The distance from the earth's surface at which the acceleration due to...

    Text Solution

    |

  3. What is the weight of an astronaut while going up in a rocket with an ...

    Text Solution

    |

  4. The acceleration due to gravity on the moon is 1/6th that on the earth...

    Text Solution

    |

  5. The gravitational force exerted by the sun on the moon is greater than...

    Text Solution

    |

  6. The height at which the acceleration due to gravity becomes g/9. (Wher...

    Text Solution

    |

  7. Two spheres of masses (m) and (M-m) are prepared from a sphere of mass...

    Text Solution

    |

  8. The mass of the moon is 1//9 that of the earth. The value of the gravi...

    Text Solution

    |

  9. Apple falls from a tree due to gravity. State which is greater in magn...

    Text Solution

    |

  10. The critical speed of satellite orbiting close to the earth’s surface ...

    Text Solution

    |

  11. The earth is acted upon by the gravitational force of attraction due t...

    Text Solution

    |

  12. The body weighs 100 N on the surface of the earth, then how much it wo...

    Text Solution

    |

  13. An artificial satellite revolves it’s orbit around the earth without u...

    Text Solution

    |

  14. An artificial satellite revolves it’s orbit around the earth without u...

    Text Solution

    |

  15. The gravitational force exerted by the sun on the moon is greater than...

    Text Solution

    |

  16. Two wires of the same material have their lengths in the ratio 3:2 , d...

    Text Solution

    |

  17. A body is dropped from a height of 100m. At what height the velocity o...

    Text Solution

    |

  18. If an earth satellite is put in orbit at a height where resistance due...

    Text Solution

    |

  19. A cylindrical open water tank with a circular base is to be made out o...

    Text Solution

    |

  20. what is the escape velocity of a body from the earth?

    Text Solution

    |