Home
Class 12
PHYSICS
The moment of the force, vec F = 4 hati ...

The moment of the force, `vec F = 4 hati + 5 hat j - 6 hat k` at `(2, 0 , - 3)`. About the point `(2, - 2, -2)` is given by

A

`= 7 hati - 8 hatj - 4 hatk`

B

`- 4 hati - hatj - 8 hatk`

C

`- 8 hati - 4 hatj - 7 hatk`

D

`- 7 hati - 4 hatj - 8 hatk`

Text Solution

Verified by Experts

`vectau = vec r xx vecF`
`vectau = (0 hati + 2 hatj - hatk) xx ( 4 hati + 5 hatj- 6 hatk)`
`vectau =- 7 hati - 4 hatj - 8 hatk`
Promotional Banner

Topper's Solved these Questions

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTION

    PHYSICS WALLAH|Exercise LEVEL-2|30 Videos

  • SEMICONDUCTOR ELECTRONICS

    PHYSICS WALLAH|Exercise NEET PAST 5 YEAR QUESTION |23 Videos

  • THERMAL PROPERTIES OF MATTER

    PHYSICS WALLAH|Exercise NEET Past 5 Years Questions|12 Videos

Similar Questions

Explore conceptually related problems

The moment of the force, vec F = 4 hati + 5 hat j = 6 hat k t (2, 0 , - 3). About the point (2, - 2, 2) is given by

The work done by a force vec F = 3 hat i -4hat j +5hat k displaces the body from a point (3,4,6) to a point (7,2,5) is

Find the moment of vec F about point (2,-1,3), where force vec F=3hat i+2hat j-4hat k is acting on point (1,-1,2)

A vector vec C when added to the resultant of the vectors vec A = 3 hati -4 hat j + 5 hat k and vec B = 2 vec 2 hat I + 3 hat j -4 hat k giv es a unit vector along y-axis. Find the magnitude of vec C .

A force vec(F) = 4hat(i) + 3hat(j) - 2hat(k) is passing through the origin. Its moment about point (1,1,0) is

The torque of a force F = -2 hat(i) +2 hat(j) +3 hat(k) acting on a point r = hat(i) - 2 hat(k)+hat(k) about origin will be

Find the moment about (1,-1,-1) of the force 3hat(i)+4hat(j)-5hat(k) acting at (1, 0,-2) .

A force vec(F) = 3 hat(i) + 2hat(j) - 4hat(k) is applied at the point (1, -1, 2) . What is the moment of the force about the point (2 , -1, 3) ?

What is the magnitude of the moment of the couple consisting of the force vec(F)=3 hat(i)+2hat(j)-hat(k) acting through the point hat(i)-hat(j)+hat(k) and -vec(F) acting through the point 2hat(i)-3hat(j)-hat(k) ?

The moment of a force represented by F=hat(i)+2hat(j)+3hat(k) about the point 2hat(i)-hat(j)+hat(k) is equal to

PHYSICS WALLAH-SYSTEM OF PARTICLES AND ROTATIONAL MOTION -NEET PAST 5 YEARS QUESTIONS
  1. The angular speed of the wheel of a vehicle is increased from 360 rpm ...

    Text Solution

    |

  2. Three identical spheres each of mass M are placed at corners of right ...

    Text Solution

    |

  3. A disc of radius 2 m and mass 100kg rolls on a horizontal floor, its c...

    Text Solution

    |

  4. A solid cylinder of mass 2 kg and radius 4 cm rotating about its axis ...

    Text Solution

    |

  5. A solid sphere is in rolling motion. In rolling motion a body prossese...

    Text Solution

    |

  6. A solid sphere is rotating freely about its symmetry axis in free spac...

    Text Solution

    |

  7. There object, A : (a solid sphere), B : (a thin circular disk) and C :...

    Text Solution

    |

  8. The moment of the force, vec F = 4 hati + 5 hat j - 6 hat k at (2, 0 ,...

    Text Solution

    |

  9. Which of following statements are correct ? ltbgt (a) Centre of mass ...

    Text Solution

    |

  10. A rope is wound around a hollow cylinder of mass 3 kg and radius 40 cm...

    Text Solution

    |

  11. Two discs of same moment of inertia rotating their regular axis passin...

    Text Solution

    |

  12. A thin uniform rod of mass 'M' and ength 'L' is rotating about a perpe...

    Text Solution

    |

  13. The rotational kinetic energy of a solid sphere of mass 3 kg and radiu...

    Text Solution

    |

  14. A light rod of length l has two masses m1 and m2 attached to its two e...

    Text Solution

    |

  15. A solid sphere of mass m and radius R is rotating about its diameter. ...

    Text Solution

    |

  16. Two rotating bodies A and B of masses m and 2m with moments of inertia...

    Text Solution

    |

  17. A riding ball of mass m strikes a rigid wall at 60^(@) and gets reflec...

    Text Solution

    |

  18. In the given figure, a=15m//s^(2) represents the total acceleration o...

    Text Solution

    |

  19. A disc and a solid sphere of same radius but different masses roll off...

    Text Solution

    |

  20. From a disc of radius R and mass m, a circular hole of diamter R, whos...

    Text Solution

    |