alejandro8212003
25.09.2019 •
Physics
Which quantity does not change when an ice skater pulls in her arms during a spin?
a. angular momentum
b. angular velocity
c. moment of inertia
d. mass
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Ответ:
The Answer is Letter A :)
Explanation:
When the ice skater sticks out her hands, she spins slower. Then she rotates really fast when she pulls her arms to her sides. This is an example of a fundamental law in physics called Conservation of Angular Momentum. This law relates two observable quantities: the speed of rotation and the shape.
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