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本课程起止时间为:2022-09-05到2022-12-30
01 Periodic Motion Unit Test 1
1、 问题:A mass of 0.20 kg , hung from a spring with a spring constant of 80.0 N/m , is set into an up-and-down simple harmonic motion. If the mass is displaced from equilibrium by 0.10 m and released from rest, what is its speed when moving through the equilibrium point?
选项:
A:0
B:1.4 m/s
C:2.0 m/s
D:3.4 m/s
答案: 【2.0 m/s】 点我阅读全文