Home
Class 11
PHYSICS
Force 3N, 4N and 12 N act at a point in ...

Force `3N, 4N` and `12 N` act at a point in mutually perpendicular directions. The magnetitude of the resultant force is :-

A

`19 N`

B

`13 N`

C

`11 N`

D

`5 N`

Text Solution

Verified by Experts

The correct Answer is:
B
Resultant `=sqrt(3^(2)+4^(2)+12^(2))=sqrt(5^(2)+12^(2))=13 N`
Promotional Banner

Topper's Solved these Questions

  • MISCELLANEOUS

    ALLEN |Exercise Exersice-03|7 Videos

  • MISCELLANEOUS

    ALLEN |Exercise ASSERTION-REASON|18 Videos

  • MISCELLANEOUS

    ALLEN |Exercise Part -II Example Some worked out Examples|1 Videos

  • KINEMATICS (MOTION ALONG A STRAIGHT LINE AND MOTION IN A PLANE)

    ALLEN |Exercise BEGINNER S BOX-7|8 Videos

  • PHYSICAL WORLD, UNITS AND DIMENSIONS & ERRORS IN MEASUREMENT

    ALLEN |Exercise EXERCISE-IV|7 Videos

Similar Questions

Explore conceptually related problems

The resultant of two forces acting an anlge of 120^(@) is 10 kg wt and is perpendicular to one of the forces. That force is

The magnitudes of mutually perpendicular forces a,b and c are 2,10 and 11 respectively. Then the magnitude of its resultant is

Three ant P,Q and R are pulling a grain with forces of magnitude 6N,3sqrt(3) N " and " 3sqrt(2)N as shown in the figure. Find the magnitude of resultant force (in N ) acting on the grain .

If vec(A) = (2,-3,1) and vec(B) = (3,4,n) are mutually perpendicular then find the value of n .

When a force acts on a body of mass 0.1 kg, the change in its velocity is 20 cm s^(-1) per second. The magnitude of this force is ..... N

A body of mass 10 kg is acted upon by two perpendicular forces, 6N and 8N. The resultant acceleration of the body is

Three forces of magnitudes 2N, 3N and 6N act at corners of a cube along three sides as shown in figure. Find the resultant of these forces in N.

The resultant of two forces,one double the other in magnitude,is perpendicular to the smaller of the two forces.The angle between the two forces is

If l_1, m_1, n_1 , and l_2, m_2, n_2 are the direction cosines of two mutually perpendicular lines, show that the direction cosines of the line perpendicular to both of these are m_1n_2-m_2n_1,n_1l_2-n_2l_1,l_1m_2-l_2m_1

ALLEN -MISCELLANEOUS-Exercise-01
  1. The sum of magnitudes of two forces acting at a point is 16N. If the r...

    Text Solution

    |

  2. If a unit vector represented by 0.5hati-0.8hatj+chatk, then the value ...

    Text Solution

    |

  3. Force 3N, 4N and 12 N act at a point in mutually perpendicular directi...

    Text Solution

    |

  4. The unit vactor parallel to the resultant of the vectors vec(A)=4hat(i...

    Text Solution

    |

  5. A physcial quantity which has a direction

    Text Solution

    |

  6. The following sets of three vectors act on a body. Whose resultant can...

    Text Solution

    |

  7. How many minimum number of vectors in different planes can be added to...

    Text Solution

    |

  8. The resultant of two vectors vec(P) and vec(Q) is vec(R). If vec(Q) is...

    Text Solution

    |

  9. Figure shows three vectors vec(a), vec(b) and vec(c), where R is the m...

    Text Solution

    |

  10. A displacement vector, at an angle of 30^(@) with y-axis has an x-comp...

    Text Solution

    |

  11. I started walking down a road in morning facing the sun. After walking...

    Text Solution

    |

  12. A bird moves from point (1 m, -2 m, 3 m) to (4 m, 2 m, 3 m). If the sp...

    Text Solution

    |

  13. Any vector in an arbitrary direction can always be replaced by two (or...

    Text Solution

    |

  14. There are two forces vectors, one of 5N and other of 12N at what angle...

    Text Solution

    |

  15. A particle has displacement of 12m towards east and 5 m towards north ...

    Text Solution

    |

  16. 21 coplanar non collinear forces (all of equal magnitude) maintain a b...

    Text Solution

    |

  17. A vector vecA points vertically upward and vecB points towards north. ...

    Text Solution

    |

  18. If |vec(A)xxvec(B)|=sqrt(3)vec(A).vec(B), then the value of |vec(A)+ve...

    Text Solution

    |

  19. The projection of vec(A) on vec(B) is :-

    Text Solution

    |

  20. Given that P=Q=R. If vec(P)+vec(Q)=vec(R) then the angle between vec(P...

    Text Solution

    |