Constant Net Torque and Rotating Objects: Understanding Angular Motion
Q1: A constant net torque is applied to a rotating object. Which of the following can possibly describe the object's motion? Check all that apply.
[ ] The object then rotates with decreasing angular velocity.
[ ] The object then rotates with constant angular velocity.
[ ] The object then rotates with increasing angular velocity.
[ ] The object then has a decreasing moment of inertia.
[ ] The object then has a constant moment of inertia.
[ ] The object then has an increasing moment of inertia.
[ ] The object then rotates with decreasing angular acceleration.
[ ] The object then rotates with constant angular acceleration.
[ ] The object then rotates with increasing angular acceleration.
Answer:
The object then rotates with constant angular velocity.
The object then rotates with constant angular acceleration.
When a constant net torque is applied to a rotating object, the object's motion can be described using the principles of rotational dynamics.
The object then rotates with constant angular acceleration means that the net torque applied is proportional to the object's moment of inertia. In this case, the angular acceleration remains constant.
The object then rotates with constant angular velocity means that if the applied torque exactly balances out any opposing torques, the object would continue to rotate at a constant angular velocity.
Understanding the relationship between torque, moment of inertia, and angular motion is crucial in analyzing the behavior of rotating objects. It allows us to predict and explain how an object will move under the influence of a constant net torque.