Home
Class 11
PHYSICS
Two persons of equal heights are carryin...

Two persons of equal heights are carrying a long uniform wooden plank of length `l` . They are at distance `(l)/(4)` and `(l)/(6)` from nearest end of the rod. The ratio of normal reaction at their heads is

A

`2:3`

B

`1:3`

C

`4:3`

D

`1:2`

Text Solution

Verified by Experts

The correct Answer is:
C


For rotational equilibrium
`N_(1)xxl/4=N_(2)xxl/3`
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Two persons of equal heights are carrying a long uniform wooden plank of length l . They are at distance (l)/(4) and (l)/(6) from nearest end of the rod. The ratio of normal reation at their heads is

The mass per unit length of a non-uniform rod of length L is given by mu= lamdaxx2 ​, where lamda is a constant and x is distance from one end of the rod. The distance of the center of mass of rod from this end is :-

The mass per unit length of a non - uniform rod of length L is given mu = lambda x^(2) , where lambda is a constant and x is distance from one end of the rod. The distance of the center of mas of rod from this end is

Two men A and B are carrying a uniform bar of length L on their shoulders. The bar is held horizontally such that A gets one-fourth load. If A is at one end of the bar, the distance of B from that end is

A uniform thin rod of length l is suspended from one of its ends and is rotated at f rotations per second. The rotational kinetic energy of the rod will be

Two uniform brass rods A and B of lengths l and 2l and radii 2r and r respectively are heated to the same temperature. The ratio of the increase in the length of A to that of B is :

A mass m is at a distance a from one end of a uniform rod of length l and mass M. Find the gravitational force on the mass due to tke rod.

RESONANCE-RIGID BODY DYNAMICS-Exercise
  1. Two light vertical springs with equal natural length and spring consta...

    Text Solution

    |

  2. A uniform rod of mass m and length L is suspended with two massless st...

    Text Solution

    |

  3. Two persons of equal heights are carrying a long uniform wooden plank ...

    Text Solution

    |

  4. A force vec(F)=4hati-10 hatj acts on a body at a point having position...

    Text Solution

    |

  5. A uniform rod of length L and weight W(R) is suspended as shown in the...

    Text Solution

    |

  6. Two points of a rod move with velocity 3 v and v perpendicular to the...

    Text Solution

    |

  7. A rod can rotate in a horizontal plane about its one end. A bead which...

    Text Solution

    |

  8. In the pulley system shown, if radii of the bigger and smaller pulley ...

    Text Solution

    |

  9. A rod of mass m and length l is kept on a surface that has no friction...

    Text Solution

    |

  10. If vec(tau)xxvec(L)=0 for a rigid body, where vec(tau)= resultant torq...

    Text Solution

    |

  11. A smooth tube of certain mass is rotated in a gravity-free Space and r...

    Text Solution

    |

  12. A smooth sphere A is moving on a frictionless horizontal plane with an...

    Text Solution

    |

  13. A body of mass m and radius r is rotated with angular velocity omega a...

    Text Solution

    |

  14. A uniform circular disc of radius r is placed on a rough horizontal su...

    Text Solution

    |

  15. In the figure shown, a ball without sliding on a horizontal, surface. ...

    Text Solution

    |

  16. As shown in the figure, a disc of mass m is rolling without slipping w...

    Text Solution

    |

  17. When a sphere rolls without slipping the ratio of its kinetic energy o...

    Text Solution

    |

  18. A soldi sphere a hollow sphere and a disc, all haing same mass and rad...

    Text Solution

    |

  19. In the previous question the smallest kinetic energy at the bottom of ...

    Text Solution

    |

  20. A box of dimensions l and b is kept on a truck moving with an accelera...

    Text Solution

    |