Home
Class 12
PHYSICS
A small block of super dense material ha...

A small block of super dense material has mass ` 2 xx 10^(24) kg`. It is at a height `h lt lt R `. It falls towards the earth.Find its speed when it is at a height `( h )/( 2)`

A

`sqrt((2gh)/3)`

B

`sqrt((3gh)/4)`

C

`sqrt((3gh)/5)`

D

`sqrt((gh)/2)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • NTA NEET SET 51

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos
  • NTA NEET SET 53

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

Similar Questions

Explore conceptually related problems

A small block of superdennse material has a mass of 3xx10^24 kg. It is situated at a height h (much smaller than the earth's radius) from where it falls on the earth's surface. Find its speed when its height from the earth's surface has reduced to h/2 . The mass of the earth is 6xx10^24kg

A small block of super dense material has a mass equal to the half of the mass of the earth . It is released from the height H(H lt lt radius of the earth) . Find its speed when its height from the eath surface decreases by 75% .

A small body of super dense material, whose mass is half the mass of the earth (but whose size is very small compared to the size of the earth), starts from rest at a height H above the earth’s surface, and reaches the earth’s surface in time t. Calculate time t assuming that H is very small compared to the radius of the earth. Acceleration due to gravity near the surface of the earth is g.

A small body of superdense material, whose mass is twice the mass of the earth but whose size is very small compared to the size of the earth, starts form rest at a height H lt lt R above the earth's surface, and reaches the earth's surface in time t . then t is equal to

A small block of superdense material has a mass (M)/(3) , where M is the mass of earth . It is released from rest from a height h ( lt lt radius of earth) from the surface of earth . The speed of the block at a height (h)/(2) is

A satellite of mass m is orbiting the earth at a height h from its surface. If M is the mass of the earth and R its radius, the kinetic energy of the stellite will be

AS satellite of mass 1000 kg is supposed to orbit the earth at a height of 2000 km above the earth's surface. Find a. its speed in the orbit b. its kinetic energy. c. The potential energy of the earth satelilte system and d. it time period. Mass of the earth =6xx10^24kg .

A pendulum bob of mass 10^(-2) kg is raised to a height 5 xx 10^(-2) m and then released. At the bottom of its swing, it picks up a mass 10^(-3) kg . To what height will the combined mass rise?

A body has a weight 72 N. When it is taken to a height h=R = radius of earth, it would weight

A stone of mass 1 kg falls to the earth from a height of 10 m. The kinetic energy of the stone when it is 4 m above the ground is

NTA MOCK TESTS-NTA NEET SET 52-PHYSICS
  1. The angular position of a line of a disc of radius r = 6cm is given by...

    Text Solution

    |

  2. The total energy of a satellite is

    Text Solution

    |

  3. A small block of super dense material has mass 2 xx 10^(24) kg. It is...

    Text Solution

    |

  4. A student says that he had applied a force F=-ksqrtx on a particle and...

    Text Solution

    |

  5. A pendulum of length 10 cm is hanged by a wall making an angle 3^@ wit...

    Text Solution

    |

  6. A simple harmonic oscillator has amplitude A, angular velocity omega, ...

    Text Solution

    |

  7. A 20 N metal block is suspended by a spring balance. A beaker containi...

    Text Solution

    |

  8. A metal wire of density rho floats on water surface horozontally. If i...

    Text Solution

    |

  9. A spherical shell of radius R is rolling down an incline of inclinatio...

    Text Solution

    |

  10. Two identical balls A and B are released from the position shown in Fi...

    Text Solution

    |

  11. The angular momentum of an electron in a hydrogen atom is proportional...

    Text Solution

    |

  12. The radius of electron's second stationary orbit in Bohr's atom is R. ...

    Text Solution

    |

  13. The ratio of radii of nuclei .13 A1^27 and .52 X^A is 3 : 5. The numb...

    Text Solution

    |

  14. When a surface 1 cm thick is illuminated with light of wavelength lamb...

    Text Solution

    |

  15. In the circuit shown, the current through the ideal diode is

    Text Solution

    |

  16. The truth table given below is for :- {:(A,B,Y),(0,0,1),(0,1,0),(1,0...

    Text Solution

    |

  17. If l(1),l(2),l(3) are the lengths of the emitter, base and collector o...

    Text Solution

    |

  18. The relation between alpha and beta parameters of current gains for a ...

    Text Solution

    |

  19. If the critical angle for total internal reflection from a medium to v...

    Text Solution

    |

  20. Two plane mirrors are kept parallel at 20 cm from each other. A point ...

    Text Solution

    |