Home
Class 11
PHYSICS
A torque of 50 N-m acting on a wheel at ...

A torque of 50 N-m acting on a wheel at rest rotates it through 200 rad in 5 sec. Its angular acceleration is -

A

`8 "rad sec"^(-2)`

B

`4 "rad sec"^(-2)`

C

`16 "rad sec"^(-2)`

D

`12 "rad sec"^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
C
`theta=omega_(0)t+(1)/(2)alphat^(2)implies200=(1)/(2)alpha(5)^(2)`
`implies alpha=16"rad/sec"^(2)`
Promotional Banner

Topper's Solved these Questions

  • ROTATIONAL MOTION

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Moment of Inertia)|139 Videos

  • ROTATIONAL MOTION

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Angular Momentum)|52 Videos

  • ROTATIONAL MOTION

    ERRORLESS|Exercise Assertion & Reason|25 Videos

  • NEWTON'S LAWS OF MOTION

    ERRORLESS|Exercise ASSERTION & REASON |18 Videos

  • SIMPLE HARMONIC MOTION

    ERRORLESS|Exercise Assertion & Reason|15 Videos

Similar Questions

Explore conceptually related problems

A torque of 100 Nm acting on a wheel at rest, rotates it through 200 radians in 10 s. The angular acceleration of the wheel, in rad//s^(2) is

A torque of 100 N-m acting on a wheel at rest, rotates it through 200 radian in 10 s. What is the moment of inertia of the wheel?

On the application of a constant torque , a wheel is turned from rest through 400 radians in 10 s. The angular acceleration is :

On applying a consatnt torque, a wheel at rest, turns through 400 radian in 10 s . Find angular acceleration. If same torque continues to act, what will be angular veclocity of the wheel after 20 s from stars ?

On the application of a constant torque, a wheel is turned from rest through an angle of 200 rad in 8s. Calculate its angular acceleration.

On application of a constant torque, a wheel is turned from rest through an angle of 200 radius in 8 s . What is its angular acceleration ? If the same torque continues to act, what will be the angular velocity of the wheel 16 s from the start ?

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

Starting from rest the fly wheel of a motor attains an angular velocity of 60 rad//sec in 5 seconds. The angular acceleration obtained is

A constant torque is acting on a wheel. If starting from rest, the wheel makes n rotations in t seconds, show that the angular acceleration is given by alpha = (4pi n)/(t^(2)) rad s^(-2) .

A wheel starts rotating at 10 rad/sec and attains the angular velocity of 100 rad/sec in 15 seconds. What is the angular acceleration in rad/ sec^(2) ?

ERRORLESS-ROTATIONAL MOTION-NCERT BASED QUESTIONS (Angular Displacement, Velocity and Acceleration)
  1. Figure below shows a body of mass M moving with the uniform speed on a...

    Text Solution

    |

  2. A coin, placed on a rotating turntable slips, when it is placed at a d...

    Text Solution

    |

  3. The angle turned by a body undergoing circular motion depends on time ...

    Text Solution

    |

  4. The angular velocity of a wheel increases from 100 to 300 in 10 s. Th...

    Text Solution

    |

  5. In a bicycle the radius of rear wheel is twice the radius of front whe...

    Text Solution

    |

  6. A point P on the rim of wheel is intially at rest and in contact with ...

    Text Solution

    |

  7. A torque of 50 N-m acting on a wheel at rest rotates it through 200 ra...

    Text Solution

    |

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

    Text Solution

    |

  9. The rotor's velocity of a helicopter engine changes from 330 rev/min t...

    Text Solution

    |

  10. A wheel turning with angular speed of 30 rev / s is brought to rest wi...

    Text Solution

    |

  11. When a disc rotates with uniform angular velocity, which of the follow...

    Text Solution

    |

  12. .A particle moves along a circle of radius (20)/(pi) m with constant t...

    Text Solution

    |

  13. The wheel of a car is rotating at the rate of 1200 revolutions per min...

    Text Solution

    |

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

    Text Solution

    |

  15. The velocity of a car travelling on a straight road is 36"kmh"^(-1) a...

    Text Solution

    |

  16. As a part of a maintenance inspection the compressor of a jet engine i...

    Text Solution

    |

  17. The linear velocity of a rotating body is given by vec(v)=vec(omega)xx...

    Text Solution

    |

  18. Figure below shows a body of mass M moving with the uniform speed on a...

    Text Solution

    |

  19. A coin, placed on a rotating turntable slips, when it is placed at a d...

    Text Solution

    |

  20. The angle turned by a body undergoing circular motion depends on time ...

    Text Solution

    |