Home
Class 11
PHYSICS
A ceiling fan is rotating about its own ...

A ceiling fan is rotating about its own axis with uniform angular velocity `omega`. The electric current is switched off then due to constant opposing torque its angular velocity is reduced to `2omega//3` as it completes 30 rotations. The number of rotations further it makes before coming to rest is

A

18

B

12

C

9

D

24

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • HORIZONTAL CIRCULAR MOTION

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-II (LEVEL-I (Straight Objective Type Questions)))|10 Videos

  • HORIZONTAL CIRCULAR MOTION

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-II (LEVEL-II (Straight Objective Type Questions)))|5 Videos

  • HORIZONTAL CIRCULAR MOTION

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-I (Angular Velocity, Angular Acceleration, Equations of Motion, Relative Angular Velocity (LEVEL I (Straight Objective Type Questions))))|11 Videos

  • GRAVITATIONAL

    AAKASH SERIES|Exercise EXERCISE -3|154 Videos

  • KINEMATICS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (PRACTICE SHEET (ADVANCED)) (Integer Type Questions)|12 Videos

Similar Questions

Explore conceptually related problems

A circular disc is rotating about its own axis at uniform angular velocity omega . The disc is subjected to uniform angular retardation by which its angular velocity is decreased to omega//2 during 120 rotations., The number of rotations further made by it before coming to rest is

A circular disc is rotating about its own axis at an angular velocity omega . If P is exact midpoint of dise between axis and rim of disc then angular velocity of Pis

A fly wheel is rotating about its own axis at an angular velocity 11 rads^(-1) , its angular velocity in revolution per minute is

A stationary wheel starts rotating about its own axis at uniform angular acceleration 8 rad//s^(2) . The time taken by it complete 77 rotation is