A wheel with rotational inertia I is mounted on a fixed, frictionless axle. The

Question

A wheel with rotational inertia I is mounted on a fixed, frictionless axle. The angular speed of the wheel is increased from zero to f in a time interval T. What is the average net torque on the wheel during this time interval? 1. = Iw2/T 2. = Iw/T2 3. =w/T2 4. = Iw/T 5. = w/t
What is the average power input to the wheel during this time interval? A wheel with rotational inertia I is mounted on a fixed, frictionless axle. The angular speed of the wheel is increased from zero to f in a time interval T. What is the average net torque on the wheel during this time interval? 1. = Iw2/T 2. = Iw/T2 3. =w/T2 4. = Iw/T 5. = w/t
What is the average power input to the wheel during this time interval? What is the average power input to the wheel during this time interval?

Explanation / Answer

torque = I where I = moment of inertia           = angular accleration = ( w f - 0 ) / T            = w f / T So, torque = I w f / T

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