Home
Class 11
PHYSICS
A particle of mass 0.5 kg is displaced f...

A particle of mass `0.5 kg` is displaced from position `vec r_(1)(2,3,1)` to`vec r_(2)(4,3,2)` by applying a force of magnitude `30 N` which is acting along `(hati + hatj + hatk)`. The work done by the force is

A

`10sqrt(3j)`

B

`30sqrt3J`

C

30J

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • SHM-WAVE,GRAVITATION,FLUID,HEAT

    MOTION|Exercise EXERCISE|109 Videos

Similar Questions

Explore conceptually related problems

Two constant forces vec(F)_(1) and vec(F)_(2) acts on a body of mass 8 kg. These forces displaces the body from point P(1, -2,3) to Q(2,3,7) in 2s starting from rest. Force vec(F)_(1) is of magnitude 9 N and is acting along vector (2hat(i)-2hat(j)+hat(k)) . Work done by the force vec(F)_(2) is :-

A particle is displaced from a position 2hati-hatj+hatk (m) to another position 3hati+2hatj-2hatk (m) under the action of a force 2hati+hatj-hatk(N) . The work done by the force is

A constant force of (2hati+3hatj+5hatk) N produces a displacement of (3hati+2hatj+2hatk) m. Then work done is

A uniform force of (3 hati + hatj) newton acts on a partical of mass 2 kg . Hence the partical is displaced from position (2 hati + hatk) metre to possion (4 hati + 3 hatj - hatk) meters. The work done by the force on the partical is

A body moves from a position vec(r_(1))=(2hati-3hatj-4hatk) m to a position vec(r_(2))=(3hati-4hatj+5hatk)m under the influence of a constant force vecF=(4hati+hatj+6hatk)N . The work done by the force is :

A particle moved from position vec r_(1) = 3 hati + 2 hatj - 6 hatk to position vecr_(2) = 14 hati + 13 hatj +9 hatk undre the action of a force (4 hati + hatj +3 hatk) newtons . Find the work done .

A force vecF= (3hati+4hatj) N acts on a body and displaces it by vecS= (3hati+4haj)m . The work done (W= vecF*vecS ) by the force is :

A force applied on a particle of mass 2 kg changes its velocity from (hati + 2 hatj ) ms^(-1) "to" (4hati +6hatj )ms^(-1) ​. The work done by the force in this process is :-

MOTION-MECHANICS-EXERCISE
  1. A block of mass 1kg is pushed on a movable wedge of mass 2kg and heigh...

    Text Solution

    |

  2. A uniform flexible chain of mass m and length 2 hangs in equilibrium ...

    Text Solution

    |

  3. A particle of mass 0.5 kg is displaced from position vec r(1)(2,3,1) t...

    Text Solution

    |

  4. In the given figure, the inclined surface is smooth. The body releases...

    Text Solution

    |

  5. A body of mass 2 kg is moved from a point A to a point B by an externa...

    Text Solution

    |

  6. In the figure, the block B of mass m starts from rest at the top of a ...

    Text Solution

    |

  7. The ring R in the arrangement shown can slide along a smooth, fixed, h...

    Text Solution

    |

  8. A block of mass M is hanging over a smooth and light pulley by a const...

    Text Solution

    |

  9. A sphere is moving with velocity vector 2hati+2hatj immediately before...

    Text Solution

    |

  10. Two particles having position vectors vec(r )(1) = ( 3 hat(i) + 5 hat(...

    Text Solution

    |

  11. A light spring of spring constant k is kept compressed between two blo...

    Text Solution

    |

  12. Force acting on a particle is )jˆ3 iˆ (2  N. Work done by this force ...

    Text Solution

    |

  13. A pendulum of mass 1 kg and length  = 1m is released from rest at ang...

    Text Solution

    |

  14. The system is released from rest with both the springs in unstretched ...

    Text Solution

    |

  15. In previous question maximum speed of the block placed horizontally is...

    Text Solution

    |

  16. A particle undergoes uniform circular motion. About which point on the...

    Text Solution

    |

  17. A horizontal circular plate is rotating about a vertical axis passing...

    Text Solution

    |

  18. A disc is rolling without slipping with angular velocity omega. P and ...

    Text Solution

    |

  19. A uniform thin rod of mass m and length L is standing vertically along...

    Text Solution

    |

  20. A spinning ballet dancer changes the shape of her body by spreading he...

    Text Solution

    |