Home
Class 12
PHYSICS
If P is the power supplied to a rotating...

If P is the power supplied to a rotating body, having moment of inertia I and angular acceleration `alpha` , then its instantaneous angular velocity is given by

A

`omega=(PI)/(alpha)`

B

`omega=(P)/(Ialpha)`

C

`omega=Pialpha`

D

`omega=(I)/(Palpha)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ROTATIONAL MOTION

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP - 3|8 Videos

  • OSCILLATIONS

    MARVEL PUBLICATION|Exercise MCQ|368 Videos

  • SEMICONDUCTORS

    MARVEL PUBLICATION|Exercise MCQs|261 Videos

Similar Questions

Explore conceptually related problems

The product of moment of inertia (I) and angular acceleration (alpha) is called

A rigid body of moment of inertia l has an angular acceleration alpha . If the instantaneous power is P then, the instantaneous angular velocity of the body is

A rigid body is free to rotate about an axis. Can the body have non-zero angulalr acceleration of an instant when its angular velocity is zero?

If I is the moment of Inertia and E is the kinetic energy of rotation of a body , then its angular momentum is given by

If I, alpha and tau are the moment of inertia, angular acceleration and torque respectively of a body rotating about an axis with angular velocity omega then,

A ballet dancer is rotating about his own vertical axis at an angular velocity 100 rpm on smooth horizontal floor. The ballet dancer folds himself close to his axis of rotation by which is moment of inertia decreases to half of initial moment of inertia then his final angular velocity is

According to the principle of conservation of angular momentum, if moment of inertia of a rotating body decreases, then its angular velocity

If the angular velocity of a rotating rigid body is increased then its moment of inertia about that axis

A round disc of moment of inertia I_2 about its axis perpendicular to its plane and passing through its centre is placed over another disc of moment of inertia I_1 rotating with an angular velocity omega about the same axis. The final angular velocity of the combination of discs is.

A solid body rotates with deceleration about a stationary axis with an angular deceleration betapropsqrt(omega) , where omega is its angular velocity. Find the mean angular velocity of the body averaged over the whole time of rotation if at the initial moment of time its angular velocity was equal to omega_0 .