Home
Class 11
PHYSICS
A fly wheel of an engine starting from r...

A fly wheel of an engine starting from rest attainsan an angular velocity of `100 rad s^(-1)` in 10 s . Calculate
angular displacement in 10 s

Text Solution

Verified by Experts

`d omega = 100 - - = 100 rads ^(-1) , dt = 10 s`
Angular displacement
`theta = (1)/(2) alpha t^(2)`
`= (1)/(2) xx 10 xx 10^(2) = 500 ` radians
Promotional Banner

Topper's Solved these Questions

  • KINEMATICS

    PREMIERS PUBLISHERS|Exercise Other important questions & answers (IV. Long answer questions).|34 Videos

  • GRAVITATION

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTION & ANSWERS (CONCEPTUAL QUESTIONS)|34 Videos

  • KINETIC THEORY OF GASES

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWERS (VI. Conceptual Questions.)|8 Videos

Similar Questions

Explore conceptually related problems

A fly wheel of an engine starting from rest attainsan an angular velocity of 100 rad s^(-1) in 10 s . Calculate angular acceleration

A car started from rest and it is travelling with velocity of 20 m/s in 10 s. What is its acceleration?

The motor of an engine is rotating about its axis with an angular velocity of 100 rev/minute. It comes to rest in 15 s, after being switched off. Assuming constant angular deceleration, calculate the number of revolutions made by it before coming to rest.

Two discs are rotating about their axes, normal to the discs and passing through the centers of the discs. Disc D_1 has 2 kg mass and 0.2m radius initial angular velocity of 50 rad s^-1 . Disc D_2 has 4 kg mass, 0.1 m radius and initial angular velocity of 200 rad^s-1 The two discs are brought in Contact face to face, with their axes of rotation coincident The final angular velocity (in rad s^-1) of the system is

A star of mass twice the solar mass and radius 10^(6) km rotates about its axis with an angular speed of 10^(-6)"rad"s^(-1) . What is the angular speed of the star when it collapses (due to inward gravitational) force) to a radius of 10^(4)km ?

A conducting ring of radius 1 m kept in a uniform magnetic field B of 0.01 T, rotates uniformly with an angular velocity 100 rad s^(-1) with its axis of rotation perpendicular to B. The maximum induced emf in it is

A spherical solid ball of 1 kg mass and radius 3 cm is rotating about an axis passing through its centre with an angular velocity of 50 rad/s. Calculate the kinetic energy of rotation.

A wheel is rotating with angular velocity 2 rad/s. It is subjected to a uniform angular acceleration 2 rad/s2 then the angular velocity after 10s is

PREMIERS PUBLISHERS-KINEMATICS -Other important questions & answers (V. Numerical problems).
  1. Calculate the angular velocity in rad/sec. of a fly wheel making 300 r...

    Text Solution

    |

  2. Calculate linear velocity of a body which moves in a circular path of...

    Text Solution

    |

  3. A fly wheel of an engine starting from rest attainsan an angular veloc...

    Text Solution

    |

  4. A fly wheel of an engine starting from rest attainsan an angular veloc...

    Text Solution

    |

  5. A cricket ball is hit at 45^(@) to the horizontal with a kinetic ener...

    Text Solution

    |

  6. A particle moves 2m east then 4m north then 5m west. The distance is

    Text Solution

    |

  7. Is pressure a vector ? Give reason .

    Text Solution

    |

  8. Can we add a velocity vector to a displacement vector ?

    Text Solution

    |

  9. What is the maximum number of components into which a vector can be re...

    Text Solution

    |

  10. Can a body have zero velocity and still be accelerating ?

    Text Solution

    |

  11. Can an object have an eastward velocity while experiencing a westward ...

    Text Solution

    |

  12. Is the direction of acceleration same as the direction of velocity ?

    Text Solution

    |

  13. Can the relative velocities of two bodies be greater than the absolute...

    Text Solution

    |

  14. When an observer is standing on earth, the trees and houses appear sta...

    Text Solution

    |

  15. Can the position-time graph have a negative slope?

    Text Solution

    |

  16. What is the nature of the displacement-time graph of a body moving wit...

    Text Solution

    |

  17. Is it possible that your cycle has a northward velocity but southward...

    Text Solution

    |

  18. Is the time variation of position, shown in the adjacent figure observ...

    Text Solution

    |

  19. Why does a tennis ball bounce higher on hills than in plains ?

    Text Solution

    |

  20. The magnitude and direction of the acceleration of a body are constan...

    Text Solution

    |