If a rotating object has a moment of inertia of 4 kg·m² and an angular velocity
Practice Questions
Q1
If a rotating object has a moment of inertia of 4 kg·m² and an angular velocity of 3 rad/s, what is its kinetic energy?
6 J
12 J
18 J
24 J
Questions & Step-by-Step Solutions
If a rotating object has a moment of inertia of 4 kg·m² and an angular velocity of 3 rad/s, what is its kinetic energy?
Rotational Kinetic Energy – The energy possessed by a rotating object, calculated using the formula KE = 0.5 Iω², where I is the moment of inertia and ω is the angular velocity.
Moment of Inertia – A measure of an object's resistance to changes in its rotation, dependent on the mass distribution relative to the axis of rotation.
Angular Velocity – The rate of rotation of an object, measured in radians per second.
