Một vật dao động điều hòa với phương trình dao động:
3
x 4sin 2 t
4
=...
![subject](/tpl/images/cats/fizika.png)
Physics, 17.08.2021 15:40 KittehMeow6039
Một vật dao động điều hòa với phương trình dao động:
3
x 4sin 2 t
4
= −
(cm).
a. Xác định vị trí và tính chất chuyển động tại t = 1,5 s.
b. Tại t = 2 s vật đang đi ra xa hay về gần vị trí cân bằng O với tốc độ bằng bao nhiêu ?
c. Tính vận tốc và gia tốc của chất điểm khi li độ
x 2 3 =
cm và đang ra xa vị trí cân bằng.
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