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1. |
The natural frequency of a spring-mass system on earth is ωn. The natural frequency of this system on the moon (gmoon = gearth/6) is$# |
A. | ω<sub>n</sub> |
B. | 0.408ω<sub>n</sub> |
C. | 0.204ω<sub>n</sub> |
D. | 0.167ω<sub>n</sub> |
Answer» B. 0.408‚âà√¨‚àö¬¢<sub>n</sub> | |