Home
Class 11
PHYSICS
The work done in moving an object from o...

The work done in moving an object from origin to a point whose position vector is `vecr = 3hati + 2hatj - 5hatk` by a force `vecF = 2hati - hatj - hatk` is

A

1 unit

B

9 unit

C

13 unit

D

60 unit

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • APPENDICES

    AAKASH SERIES|Exercise WORK POWER ENERGY (SCALAR OR DOT PRODUCT) (ENERGY & L.C.E)|17 Videos
  • APPENDICES

    AAKASH SERIES|Exercise WORK POWER ENERGY (SCALAR OR DOT PRODUCT) (POWER)|20 Videos
  • APPENDICES

    AAKASH SERIES|Exercise GRAVITATION (EARTH SATELLITES AND ESCAPE SPEED)|35 Videos
  • CALORIMETRY

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL - II) (LECTURE SHEET (ADVANCED)(Matrix Type Questions)|1 Videos

Similar Questions

Explore conceptually related problems

The work done in moving an object from origin to a point whose position vector is r=3hati+2hatj-5hatk by a force F=2hati-hatj-hatk

find vecA xx vecB if vecA = hati - 2 hatj + 4 hatk and vecB = 3 hati - hatj + 2hatk

The ratio in which the line segment joining the points whose position vectors are 2 hati - 4 hatj - 7 hatk and - 3 hati + 5 hatj - 8 hatk is divided by the plane whose equation is vec r.(hati -2 hatj + 3hatk) =13 is

Find the scalar and vector products of two vectors. a = (3hati – 4hatj + 5hatk) and b = (– 2hati + hatj – 3hatk )

The equation of the plane passing through a point with position vector hati + 2 hatj + 3 hatk and parallel to the plane vecr. (3 hati + 4 hatj + 5 hatk)=0 is

A unit vector parallel to the intersection of the planes vecr.(hati - hatj + hatk) =5 and vecr.( 2 hati + hatj - 3 hatk) =4 is

find the work in moving an object through a displacement 2 hati + 3 hatj + 5 hatk when the applied force is 5 hati - 4 hatj + 2 hatk

If vecA, vecB are perpendicular vectors :' vecA = 5 hati + 7 hatj - 3 hatk :'vecB = 2 hati + 2 hatj - c hatk . Value of c is

AAKASH SERIES-APPENDICES -WORK POWER ENERGY (SCALAR OR DOT PRODUCT) (WORK)
  1. A body of mass 300 Kg is moved through 10m along a smooth inclined pla...

    Text Solution

    |

  2. The work done in moving an object from origin to a point whose positio...

    Text Solution

    |

  3. The radius of a well is 7m. Water in it is at a depth of 20m and depth...

    Text Solution

    |

  4. A particle of mass.m. is projected with a velocity .u. at an angle . t...

    Text Solution

    |

  5. Twenty identical cubical blocks each of mass 100 gm and of side 10cm a...

    Text Solution

    |

  6. A uniform chain of mass.m. and length .L. is kept on a horizontal tabl...

    Text Solution

    |

  7. A uniform rope of length l and mass.m. hangs over a horizontal table w...

    Text Solution

    |

  8. The displacement of a body of mass 2 kg varies with time.t. as S =t^(2...

    Text Solution

    |

  9. The work done by a force vecF =(-6x^(2)hati) N in displacing a partic...

    Text Solution

    |

  10. A long rod ABC of mass "m" and length "L" has two particles of masses ...

    Text Solution

    |

  11. A cable in the form of a spiral roll as shown in the figure has a line...

    Text Solution

    |

  12. A body constrained to move along the z-axis of a coordinate system is ...

    Text Solution

    |

  13. A body of mass 0.5 kg travels in a straight line with velocity v=ax^(3...

    Text Solution

    |

  14. A ball of mass 0.2 kg is thrown vertically upwards by applying a force...

    Text Solution

    |

  15. A body is projected vertically up with certain velocity. At a point .P...

    Text Solution

    |

  16. When a body is projected vertically up, at a point .P. in its path, th...

    Text Solution

    |

  17. A unifrom chain of length .L. is placed on a smooth table of height .h...

    Text Solution

    |

  18. A freely falling body takes 4s to reach the ground. One second after r...

    Text Solution

    |

  19. A body of mass 0.1kg released from a height of 50m reaches the ground ...

    Text Solution

    |

  20. A body of mass 100 gm is suspended from a massless spring of natural l...

    Text Solution

    |