Home
Class 11
PHYSICS
A body of mass m falls from earth's surf...

A body of mass m falls from earth's surface at a height equal to twice the radius (R) each. Then the change in P.E. of body will be

A

`mg2R`

B

`2/3mgR`

C

`3mgR`

D

`1/3mgR`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    SARAS PUBLICATION|Exercise EXAMPLE|15 Videos

Similar Questions

Explore conceptually related problems

A body of mass m is taken from the Earth's surface to a height equal to the radius R of the earth. If g is the acceleration to gravity at the surface of the Earth, then find the change in the potential energy of the body .......

A seconds pendulum is placed in a space laboratory orbiting around the Earth at a height 3R from the Earth's surface where R is the radius of the Earth. The time period of the pendulum will be……………

If the acceleration due to gravity at the surface of the earth is g, the work done is slowly lifting a body of mass in from the earth's surface to a height R equal to the radius of the earth is

If the acceleration due to gravity at the surface of the earth is g, the work done in slowly lifting a body ofmass m from the earth's surface to a height R equal to the radius of the earth is

A body projected electrically from the earth reaches a height equal to earth's radius before retruning to the earth. The power exerted by the gravitational force is greatest

A body of mass m is placed on Earth surface which is taken from Earth surface to a height h = 3R, then change in gravitaional potential energy is:

If a body is raised from the surface of the earth upto height R, what is the change in potential energy?

SARAS PUBLICATION-WORK, ENERGY AND POWER-EXAMPLE
  1. The power obtained in a reactor using U235 disintegration is 1000 Kw. ...

    Text Solution

    |

  2. If the radius of a star is R and it acts as a block body . What would...

    Text Solution

    |

  3. A body of mass m falls from earth's surface at a height equal to twice...

    Text Solution

    |

  4. A person holdinga rifle (mass of person and rifle together is 100kg) s...

    Text Solution

    |

  5. One coolie takes 1 minute to raise a suitcase through a height of 2m ...

    Text Solution

    |

  6. A system is taken from state a to state c by two paths adc and abc a...

    Text Solution

    |

  7. A projectile is fired from the surface of the earth with a velocity of...

    Text Solution

    |

  8. The force F acting on a particle of mass m is indicated by the force t...

    Text Solution

    |

  9. A body of mass 4 m is lying in xy - plane at rest. It suddenly explode...

    Text Solution

    |

  10. A force vecF= alpha hat i +3 hatj+6hatk is acting at a point vec r =2h...

    Text Solution

    |

  11. Two particles A and B, move with constant velocities, vecv1 and vecv2 ...

    Text Solution

    |

  12. On a frictionless surface a block of mass. M moving at a speed v colli...

    Text Solution

    |

  13. A block A of mass m1 rests on a horizontal table . A light string conn...

    Text Solution

    |

  14. Two particles of masses m1, m2 move with intial velocity mu1 and mu2. ...

    Text Solution

    |

  15. A wind with speed 40 m/s blows parallel to the roof of a house. The a...

    Text Solution

    |

  16. Three blocks A, B and C of mass 4 kg , 2kg and 1kg respectively , are ...

    Text Solution

    |

  17. A particle mass m is driven by a machine that delivers a constant pow...

    Text Solution

    |

  18. A particle moves so that its position vector is given by vecr = cos om...

    Text Solution

    |

  19. A refrigerator works between 4^@C and 30^@ , it is required to remove...

    Text Solution

    |

  20. A body of mass 1kg begins to more under the action of a time dependent...

    Text Solution

    |