Home
Class 11
PHYSICS
K.E. of a body is increased by 300%. Fin...

K.E. of a body is increased by 300%. Find the % increase in its momentum.

Text Solution

Verified by Experts

`K.E.=p^(2)/(2m) "so"p=sqrt(2mk)`
Increase in K.E.=300% of k=3k
`"Final K.E"., K^(.)+3K=4K`
`"Final momentum", p^(.)=sqrt(2mk^(.))=sqrt(2mxx4k)=sqrt(2mk)=2p`
`%"increase in momentum" =(p^(.)=p)/pxx100=100%`
Promotional Banner

Topper's Solved these Questions

  • WORK, ENERGY AND POWER

    FULL MARKS|Exercise Additional Question Solved (Long Answer Questions)|2 Videos
  • WORK, ENERGY AND POWER

    FULL MARKS|Exercise Additional Question Solved (Numercials)|11 Videos
  • WORK, ENERGY AND POWER

    FULL MARKS|Exercise Additional Question Solved (I. MCQ)|76 Videos
  • WAVES

    FULL MARKS|Exercise Additional Questions Solved (Numerical Problems )|10 Videos

Similar Questions

Explore conceptually related problems

Each edge of a cube is increased by 50%. Find the percentage increase in the surface area.

If the KE of a body increases by 300% by what percent will the linear momentum of the body increase.

The radius of a sphere increases by 25% . Find the percentage increase in its surface area.

A circular metal plate expands under heating so that its radius increases by 2%. Find the approximate increase in the area of the plate if the radius of the plate before heating is 10 cm.

If momentum of a body increases by 100% then what will be percentage increase in its kinetic energy ?

FULL MARKS-WORK, ENERGY AND POWER-Additional Question Solved (II. Short Answer Questions)
  1. State the condition under which a force does not work.

    Text Solution

    |

  2. How will the momentum of a body change if its K.E. is doubled ?

    Text Solution

    |

  3. K.E. of a body is increased by 300%. Find the % increase in its moment...

    Text Solution

    |

  4. A light and a heavy body have same K.E., which of the two have more m...

    Text Solution

    |

  5. Does the P.E. of the spring decreases or increases when it si compress...

    Text Solution

    |

  6. Name a process in which momentum change but K.E. does not

    Text Solution

    |

  7. What happens to the P.E. of a bobble when it rises in water ?

    Text Solution

    |

  8. A body is moving at constant speed over a frictionaless surface. What ...

    Text Solution

    |

  9. Define spring constant of a spring.

    Text Solution

    |

  10. How much work is done by a coolise walking on a frontal plastikam vidi...

    Text Solution

    |

  11. Mountain roads rarely go striaght up the slop, but wind up gradually. ...

    Text Solution

    |

  12. A truck and a car moving with the same K.E. on a stright road. Their ...

    Text Solution

    |

  13. Is in necessary that we does the motion of a body on a closed loop is ...

    Text Solution

    |

  14. How high most a body be lifted to gain an amount of P.E. equal to K.E....

    Text Solution

    |

  15. Give an example in which a force does work on a body but fails to chan...

    Text Solution

    |

  16. A bob is pulled sideway so that string becomes parallel to horizontal ...

    Text Solution

    |

  17. Two spring A and B are idential except that A is harder than B (k(A)g...

    Text Solution

    |

  18. Find the work done if a particle moves from position r(1)="to a positi...

    Text Solution

    |

  19. Spring A and B are identical except that A is stiffer than B, i.e., Fo...

    Text Solution

    |

  20. A ball at rest is dropped from a height of 12m. It loses 25% of its ki...

    Text Solution

    |