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Physics, 22.07.2021 14:00 volocibel

Một vật khối lượng 800g dđ đh theo pt v = -12πsin(3πt + π/2) cm/s a) Tính động năng, thế năng, cơ năng tại thời điểm 1s
b) Thế năng, động năng dao động với chu kì bao nhiêu?
c) Tại vị trí nào động năng bằng 3 lần thế năng.

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Một vật khối lượng 800g dđ đh theo pt v = -12πsin(3πt + π/2) cm/s a) Tính động năng, thế năng, cơ n...
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