A figure skater on ice spins on one foot.
She pulls in her arms and her rotational speed
increases.
Choose the best statement below:
1. Her angular speed increases because her
angular momentum is the same but her mo-
ment of inertia decreases.
2. Her angular speed increases because by
pulling in her arms she creates a net torque in
the direction of rotation.
3. Her angular speed increases because air
friction is reduced as her arms come in.
4. Her angular speed increases because her
potential energy increases as her arms come
in.
5. Her angular speed increases because she
is undergoing uniformly accelerated angular
motion.
6. Her angular speed increases because her
angular momentum increases.
She pulls in her arms and her rotational speed
increases.
Choose the best statement below:
1. Her angular speed increases because her
angular momentum is the same but her mo-
ment of inertia decreases.
2. Her angular speed increases because by
pulling in her arms she creates a net torque in
the direction of rotation.
3. Her angular speed increases because air
friction is reduced as her arms come in.
4. Her angular speed increases because her
potential energy increases as her arms come
in.
5. Her angular speed increases because she
is undergoing uniformly accelerated angular
motion.
6. Her angular speed increases because her
angular momentum increases.