Home
Class 12
PHYSICS
A wheel of radius 0.4m can rotate freely...

A wheel of radius `0.4m` can rotate freely about its axis as shown in the figure. A string is wrapped over its rim and a mass of `4 kg` is hung. An angular acceleration of `8 rad//s^(2)` is produced in it due to the torque. Then, the moment of inertia of the wheel is (`g=10m//s^(2)`)

A

`2 kg m^(2)`

B

`1 kg m^(2)`

C

`4 kg m^(2)`

D

`8 kg m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • NTA JEE MOCK TEST 95

    NTA MOCK TESTS|Exercise PHYSICS|25 Videos

  • NTA JEE MOCK TEST 97

    NTA MOCK TESTS|Exercise PHYSICS|25 Videos

Similar Questions

Explore conceptually related problems

A wheel of radius 10 cm can rotate freely about its centre as shown in figure. A stirng is wrapped over its rim and is ulle dby a force of 5.0 N. It is found that the torque roduces an angular acceleration 2.0 rad/s^2 in the wheel. Calculate the moment of inertia of the wheel.

A wheel of radius 20 cm and moment of inertia 1 kgm^2 can rotate about its centre.A string is wrapped over its rim and is pulled by a force 'F' tangential to the rim of wheel.If angular acceleration produced is 2 rad/ s^2 then the value of force 'F' is

8 kg wheel has radius of gyration (1/4) m. The torque required to give it an angular acceleration of 4 rad//s^(2) , is

A uniform disc of radius R and mass M is free to rotate only about its axis. A string is wrapped over its rim and a body of mass m is tied to the free end of the string as shown in the figure. The body is released from rest. Then the acceleration of the body is

A fly wheel of 0.4 kg(m^-2) M.I. and of 0.2 m radius can rotate about its axis. A rope is wrapped around its circumference and pulled with 10 N force. The value of angular acceleration in rad/sec^2 will be?

A wheel of moment of inertia I and rdius r is free to rotate about its centre as shown in figure. A string is wrapped over its rim and a block of mass m is attached to the free end of the string. The system is released from rest. Find the speed of the block as it descends through a height h.

A stationary wheel starts rotating about its own axis at an angular acceleration 5.5 rad//s^(2) . To acquire an angular velocity 420 revolutions per minute , the number of rotations made by the wheel is

Compute the torque acting on a wheel of moment of inertia 10kgm^(2) , moving with angular acceleration 5 rad s^(-2) .

The moment of inertia of a flywheel is 4 kg m^(2) . What angular acceleration will be produced in it by applying a torque of 10 Nm on it?

NTA MOCK TESTS-NTA JEE MOCK TEST 96-PHYSICS
  1. Light of wavelength 600 nm is incident normally on a slit of width 0.2...

    Text Solution

    |

  2. A flexible wire bent in the form of a circle is place in a uniform mag...

    Text Solution

    |

  3. A wheel of radius 0.4m can rotate freely about its axis as shown in th...

    Text Solution

    |

  4. In a vertical U-tube containing a luquid, the two arms are maintained ...

    Text Solution

    |

  5. Two long concentric cylindrical conductors of radii a and b (b lt a) ...

    Text Solution

    |

  6. A body of mass m = 1 kg is moving in a medium and experiences a fricti...

    Text Solution

    |

  7. A uniform rectangular thin sheet ABCD of mass M has length a and bread...

    Text Solution

    |

  8. One mole of an ideal gas is taken along the process in which PV' = co...

    Text Solution

    |

  9. A small ball of mass 2 xx 10^(-3) kg having a charge of 1 muC is suspe...

    Text Solution

    |

  10. If the area to be covered for TV telecast is doubles then height of tr...

    Text Solution

    |

  11. A square coil of edge l having n turns carries a current i. it is kept...

    Text Solution

    |

  12. A piece of burnt wood of mass 20 g is found to have a .^(14)C activity...

    Text Solution

    |

  13. A pendulum of length L carries a negative charge -q on the bob. A posi...

    Text Solution

    |

  14. Two rods (one semi-circular and other straight) of same material and o...

    Text Solution

    |

  15. Time (T), velocity (C) and angular momentum (h) are chosen as fundamen...

    Text Solution

    |

  16. Electrons with energy 80 keV are incident on the tungsten target of an...

    Text Solution

    |

  17. The graph between the mass of liquid inside the capillary and radius o...

    Text Solution

    |

  18. An observer whose least distance of distinct vision is 'd' views the ...

    Text Solution

    |

  19. If stopping potentials corresponding to wavelengths 4000A and 4500A ar...

    Text Solution

    |

  20. An open pipe of sufficient length is dipping in water with a speed v v...

    Text Solution

    |