contestada

An ice skater is spinning about a vertical axis with arms fully extended. If the arms are pulled in closer to the body and assuming no change in the skater's elevation, which of the following statements are true? There are two answers.

a) Kinetic energy remains the same.
b) Angular momentum decreases.
c) Kinetic energy increases.
d) Angular momentum is conserved.

Respuesta :

The best and most correct answer among the choices provided by your question are the third and fourth choices.

The following statements are true:

c) Kinetic energy increases.
d) Angular momentum is conserved.


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