* Torque and Angular Acceleration:
- Torque is the rotational equivalent of force. It causes an object to *rotate*.
- The relationship between torque (τ), moment of inertia (I), and angular acceleration (α) is given by:
τ = Iα
- This equation tells us that a net torque will directly cause an object to experience an angular acceleration.
* Angular Speed and Torque:
- Angular speed (ω) is how fast an object is rotating.
- If there's a net torque, it will cause an object's angular speed to change (either increase or decrease).
- If the torque is constant, the angular acceleration is constant, meaning the angular speed changes at a constant rate.
* Moment of Inertia and Torque:
- Moment of inertia (I) is a measure of an object's resistance to changes in its rotational motion. It depends on the object's mass distribution.
- Torque can *change* moment of inertia if the object's shape or mass distribution changes. However, a constant torque does not directly result in an increasing moment of inertia.
In summary:
A net torque applied to an object will cause the object to experience:
* Constant angular acceleration: This means the object's angular speed will change at a constant rate.
* Potentially changing moment of inertia: This depends on whether the object's shape or mass distribution changes.