阿摩線上測驗
55. An ice skater with rotational inertia I and angular speed ω pulls his arms in and increases his angular speed to 3ω. Calculate the change in kinetic ener^.
(A)
(B)
(C)
(D)Iω2
(E)
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統計： A(5), B(2), C(0), D(9), E(0) #3222822
統計： A(5), B(2), C(0), D(9), E(0) #3222822
