AP Physics 1easymcq1 pt
A wheel has I = 5.0 kg·m² and spins at 4.0 rad/s. Its rotational kinetic energy is
A.40 J
B.20 J
C.80 J
D.10 J
Explanation
Core Concept
K = ½Iω² = ½(5.0)(16) = 40 J.
Correct Answer
A40 J
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