Multiple Choice
A phonograph record is dropped onto a freely spinning turntable.Then:
A) neither angular momentum nor mechanical energy is conserved because of the frictional forces between record and turntable
B) the frictional force between record and turntable increases the total angular momentum
C) the frictional force between record and turntable decreases the total angular momentum
D) the total angular momentum remains constant
E) the sum of the angular momentum and rotational kinetic energy remains constant
Correct Answer:
Verified
Correct Answer:
Verified
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