Home
Class 11
PHYSICS
The angula speed of a fly-wheel making ...

The angula speed of a fly-wheel making 120 revolutions /minute is :

A

`pi` rad/sec

B

`2pi` rad/sec

C

`4pi` rad/sec

D

`4pi' ` rad/sec

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ROTATIONAL MOTION

    ERRORLESS |Exercise Practice Problems (Problems based on torque, couple)|11 Videos

  • ROTATIONAL MOTION

    ERRORLESS |Exercise Practice Problems (Problems based on moment of inertia)|33 Videos

  • ROTATIONAL MOTION

    ERRORLESS |Exercise Practice Problems (Problems based on centre of mass)|12 Videos

  • NEWTONS LAWS OF MOTION

    ERRORLESS |Exercise Self Evaluation Test|16 Videos

  • SIMPLE HARMONIC MOTION

    ERRORLESS |Exercise simple Harmonic Motion|21 Videos

Similar Questions

Explore conceptually related problems

The angular speed of a fly wheel making 120 revolutions / minute is

Calculate the angular speed of flywheel making 420 revolutions per minute.

A tractor has rear wheels with a radius of 1.00 m and front wheels with a radius of 0.250 m. The rear wheels are rotating at 100 rev/min. Find (a) the angular speed of the front wheels in revolutions per minute and (b) the distance covered by the tractor in 10.0 min.

A boy is cycling such that the wheels of the cycle are making 140 revolutions per minute. If the radius of the wheel is 30 cm, the speed of the cycle is

A boy is cycling such that the wheels of the cycle are making 140 revolutions per minute. If the diameter of the wheel is 60 cm, calculate the speed per hour with which the boy is cycling.

A boy is cycling such that the wheel of the cycle are making 140 revolutions per minute. If the diameter of the wheel is 60cm,calculate the speed per hour with which the boy is cycling.

A flywheel with a diameter of 1.20 m is rotating at an angular speed of 200 rev/min. (a) What is the angular speed of the flywheel in radians per second? (b) What is the linear speed of a point on the rim of the flywheel? ( c) What constant angular acceleration (in revolutions per minute-squared) will increase the wheel's angular speed to 1000 rev/min in 60.0 s? (d) How many revolutions does the wheel make during that 60.0 s?

If the driving wheel of a bicycle makes 560 revolutions in travelling 1.1 km. Find the diameter of the wheel :

A wheel has a speed of 1200 revolution per minute and is made to slow down at a rate of 4 rad//s^(2) . The number of revolutions it makes before coming to rest is

A wheel has a speed of 1200 revolution per minute and is made to slow down at a rate of 4 radian/ s^(2) . The number of revolutions it makes before coming to rest is

ERRORLESS -ROTATIONAL MOTION-Practice Problems (Problems based on angular displacement, velocity and acceleration)
  1. In rotational motion of a rigid body, all particles move with

    Text Solution

    |

  2. The angula speed of a fly-wheel making 120 revolutions /minute is :

    Text Solution

    |

  3. A body starting from rest gains an angular speed of 540 r.p.m in 6 sec...

    Text Solution

    |

  4. A car is moving at a speed of 72 km//h. The diameter of its wheels is ...

    Text Solution

    |

  5. A wheel is rotating at 900 rpm about its axis. When the power is cut o...

    Text Solution

    |

  6. A particle P is moving in a circle of radius r with a uniform speed u....

    Text Solution

    |

  7. Two particles having mass 'M' and 'm' are moving in a circular path ha...

    Text Solution

    |

  8. A ody is in pure rotation. The linear speed v of a particle, the dista...

    Text Solution

    |

  9. A strap is passing over a wheel of radius 30 cm. During the time the w...

    Text Solution

    |

  10. A particle starts rotating from rest. Its angular displacement is expr...

    Text Solution

    |

  11. The planes of two rigid discs are perpendicular to each other. They ar...

    Text Solution

    |

  12. A sphere is rotating about a diameter

    Text Solution

    |

  13. A rigid body rotates about a fixed axis with variable angular velocity...

    Text Solution

    |

  14. When a ceiling fan is switched on, it makes 10 rotations in the first ...

    Text Solution

    |

  15. When a ceiling fan is switched off, its angular velocity reduces to 50...

    Text Solution

    |

  16. Let vecA be a unit vecrtor along the axis of rotation of a purely rota...

    Text Solution

    |