Home
Class 11
PHYSICS
A small ball (mass m) falling under grav...

A small ball (mass m) falling under gravity in a viscous medium experience a drag force proportional to the instantaneous speed u such that `F_(drag)=ku`. Then the terminal speed of ball within viscous medium is

A

`(k)/(mg)`

B

`(mg)/(k)`

C

`sqrt((mg)/(k))`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
D
Weight-upthrust=dragforce.
But no information is given reagarding the upthrust.
Promotional Banner

Topper's Solved these Questions

  • FLUID MECHANICS

    DC PANDEY ENGLISH|Exercise B) Medical entrance special format question|19 Videos

  • FLUID MECHANICS

    DC PANDEY ENGLISH|Exercise Match the columns|6 Videos

  • FLUID MECHANICS

    DC PANDEY ENGLISH|Exercise Check point 13.4|10 Videos

  • EXPERIMENTS

    DC PANDEY ENGLISH|Exercise Subjective|15 Videos

  • GENERAL PHYSICS

    DC PANDEY ENGLISH|Exercise INTEGER_TYPE|2 Videos

Similar Questions

Explore conceptually related problems

A small steel ball of mass m and radius r is falling under gravity through a viscous liquid of coefficient of viscosity eta . If g is the value of acceleration due to gravity. Then the terminal velocity of the ball is proportional to (ignore buoyancy)

A small spherical ball falling through a viscous medium of negligible density has terminal velocity v. Another ball of the same mass but of radius twice that of the earlier falling through the same viscous medium will have terminal velocity

A spherical metal ball of mass m and radius (r ) is falling through a viscous medium. The value of its terminal velocity is proportional to

The viscous drag on a spherical body moving with a speed v is proportional to

A small ball of mass m is thrown upward with velocity u from the ground. The ball experiences a resistive force mkv^(2) where v is its speed. The maximum height attained by the ball is :

A spherical solild of volume V is made of a material of density rho_(1) . It is falling through a liquid of density rho_(2)(rho_(2) lt rho_(1)) . Assume that the liquid applies a viscous froce on the ball that is proportional ti the its speed v, i.e., F_(viscous)=-kv^(2)(kgt0) . The terminal speed of the ball is

A spherical solild of volume V is made of a material of density rho_(1) . It is falling through a liquid of density rho_(2)(rho_(2) lt rho_(1)) . Assume that the liquid applies a viscous froce on the ball that is proportional ti the its speed v, i.e., F_(viscous)=-kv^(2)(kgt0) . The terminal speed of the ball is

In an experiment to verify Stokes law , a small spherical ball of radius r and density rho falls under gravity through a distance h in air before entering a tank of water. If the terminal velocity of the ball inside water is same as its velocity just before entering the water surface , then the value of h is proportional to : ( ignore viscosity of air ) .

A spherical ball falls through viscous medium with terminal velocity v . If this ball is replaced by another ball of the same mass but half the radius, then the terminal velocity will be (neglect the effect of buoyancy.)

A ball is thrown downward In a viscous fluid with speed V. Terminal speed of ball is V_(0)

DC PANDEY ENGLISH-FLUID MECHANICS-Taking it together
  1. A tank is filled with a liquid upto a height H. A small hole is made a...

    Text Solution

    |

  2. An open U-tube contains mercury. When 11.2 cm of water is poured into ...

    Text Solution

    |

  3. A small ball (mass m) falling under gravity in a viscous medium experi...

    Text Solution

    |

  4. A capillary tube of radius R is immersed in water and water rises in i...

    Text Solution

    |

  5. The pressure of water in a pipe when tap is closed is 5.5xx10^(5) Nm^(...

    Text Solution

    |

  6. The level of water in a tank is 5 m high. A hole of area of cross sect...

    Text Solution

    |

  7. Water is flowing through two horizontal pipes of different diameters w...

    Text Solution

    |

  8. A block of wood floats in water with (4//5)th of its volume submerged....

    Text Solution

    |

  9. Water flows along horizontal pipe whose cross-section is not constant....

    Text Solution

    |

  10. For a body immersed in a liquid, when the weight of the body is less t...

    Text Solution

    |

  11. The pressures at A and B in the atmosphere are, respectively,

    Text Solution

    |

  12. A solid of density D is floating in a liquid of density d. If upsilon ...

    Text Solution

    |

  13. If equal masses of two liquids of densities d(1) and d(2) are mixed to...

    Text Solution

    |

  14. An iceberg of density 900kg//m^(3) is floating in water of density 100...

    Text Solution

    |

  15. In the figure shown,

    Text Solution

    |

  16. The volume of a balloon is 1000m^(3). It is filled with helium of dens...

    Text Solution

    |

  17. A boat having a length of 3 m and breadth of 2 m is floating on a lake...

    Text Solution

    |

  18. A small block of wood of relative density 0.5 is submerged in water. W...

    Text Solution

    |

  19. A raft of wood (density=600kg//m^(3)) of mass 120 kg floats in water. ...

    Text Solution

    |

  20. An object of w and density rho is submerged in liquid of density sigma...

    Text Solution

    |