Home
Class 11
PHYSICS
A rod of length 6m has a mass of 12 kg. ...

A rod of length `6m` has a mass of `12 kg`. It is hinged at one end of the rod at a distance of `3m` below the water surface.
a.What must be the weight of a block that is attached to the other end of the rod so that `5 m` of the rod's length is under water?
b. Find the magnitude and direction of the force exerted by the hinge on the rod. The specific gravity of the material of rod is `0.5.`

Promotional Banner

Topper's Solved these Questions

  • FLUID MECHANICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise practice Exercise 7.1|10 Videos

  • FLUID MECHANICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Practice Exercise 7.2|8 Videos

  • GRAVITATION

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical|94 Videos

Similar Questions

Explore conceptually related problems

A rod of mass m and length l is hinged at 'its' end and released from rest in position shown. Find the force exerted by the hinge when the rod becomes horizontal

A rod of length 2 m, has a mass of 0.12 kg. Its moment of inertia about an axis passing through its one end and perpendicular to the length of the rod is

A uniform thin rod of mass m and length R is placed normally on surface of earth as shown. The mass of earth is M and its radius R . Then the magnitude of gravitational force exerted by earth on the rod is

A rod of length 3m and its mass par unit length is directly proportional to the distance x from its one end . The centre of gravity of the rod from that end will be at :-

A rigid mass less rod of length L is hinged at its one end a weight W is hung at a distance l(lt L) from this end. What is force P should be applied upwards at the other end so that the rod remains in equilibrium horizontally ? .

If the linear density (mass per unit length) of a rod of length 3 m is proportional to x , where x , where x is the distance from one end of the rod, the distance of the centre of gravity of the rod from this end 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.

A rod of mass 1kg and length 6.25 m is hinged at one end of a smooth horizontal surface. A force of magnitude (pi)/(3)N acts it such that it is always perpendicular to the rod. Find the time (in sec.) when the rod has rotated one revolution?

PHYSICS GALAXY - ASHISH ARORA-FLUID MECHANICS-Unsolved Numerical Problems
  1. A rod of length 6m has a mass of 12 kg. It is hinged at one end of the...

    Text Solution

    |

  2. A block of wood floats in water two-thirds of its volume submerged. In...

    Text Solution

    |

  3. A balloon filled with hydrogen has a volume of 1m^(3) and its mass is ...

    Text Solution

    |

  4. A horizontal pipeline carries water in a streamline flow. At a point a...

    Text Solution

    |

  5. A glass tube of radius 0.8 cm floats vertical in water, as shown in fi...

    Text Solution

    |

  6. When equal volumes of two substances are mixed together, the specific ...

    Text Solution

    |

  7. Water from a tap emerges vertically downwards with an initial spped of...

    Text Solution

    |

  8. A piece of metal floats on mercury. The coefficient of volume expansio...

    Text Solution

    |

  9. A large open tank has two holes in the wall. One is a square hole of s...

    Text Solution

    |

  10. A tank 5 m high is half filled with water and then is filled to top wi...

    Text Solution

    |

  11. A stone of density 2.5 g//cm^(3) completely immersed in sea water is a...

    Text Solution

    |

  12. A cube of wood supporting 200gm mass just floats in water. When the ma...

    Text Solution

    |

  13. Water is flowing continuously from a tap having an internal diameter 8...

    Text Solution

    |

  14. A certain block weighs 15 N in air. But is weighs only 12 N when compl...

    Text Solution

    |

  15. A cylindrical tank 1 m in radius rests on a platform 5 m high. Initial...

    Text Solution

    |

  16. A vertical uniform U tube open at both ends contains mercury. Water is...

    Text Solution

    |

  17. A piece of copper having an internal cavity weights 264 g in air and 2...

    Text Solution

    |

  18. A beaker of mass 1 kg contains 2 kg of water and rests on a scale. A 2...

    Text Solution

    |

  19. A Piece of brass (alloy of zinc and copper) weighs 12.9 g in air. When...

    Text Solution

    |

  20. Shows a hydraulic press with the larger piston of diameter 35cm at a h...

    Text Solution

    |

  21. Two identical cyclindrical vessels (area of cross section 3.5 xx 10^(-...

    Text Solution

    |