All Flashcards
What is the relationship between torque and force?
Torque is the rotational equivalent of force. Force causes linear acceleration; torque causes angular acceleration.
What is the relationship between linear and angular momentum?
Angular momentum is the rotational equivalent of linear momentum. Both are conserved in closed systems.
Compare linear and rotational kinematics.
Both describe motion; linear uses displacement, velocity, and acceleration, while rotational uses angular displacement, angular velocity, and angular acceleration.
What is the effect of applying a torque to an object?
It causes the object to experience angular acceleration.
What happens to angular velocity when moment of inertia decreases in a closed system?
Angular velocity increases to conserve angular momentum.
What causes a change in angular momentum?
An external torque applied over a period of time.
What is the effect of increasing the lever arm when applying a force?
It increases the torque produced.
What happens when a figure skater pulls their arms in?
Their moment of inertia decreases, and their angular velocity increases.
What happens when net torque is zero?
Angular momentum is conserved.
What is the effect of applying a torque to an object?
It causes angular acceleration.
What happens when a figure skater pulls their arms in?
Their moment of inertia decreases, and their angular velocity increases to conserve angular momentum.
What happens to angular momentum in a closed system?
Total angular momentum remains constant.
What is the effect of increasing the radius on the moment of inertia?
Increasing the radius will increase the moment of inertia, making it harder to change the object's rotational motion.
What is the effect of increasing the mass on the moment of inertia?
Increasing the mass will increase the moment of inertia, making it harder to change the object's rotational motion.