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3 years ago

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Câu 2 : Một vật dao động điều hòa với phương trình : x = 5cos(4πt – π/3) (cm)

1 answer:

fredd [130]3 years ago

5 0

Li độ cực đại x=A=5 cm

Chu kỳ T= $\frac{2\pi }{4\pi }$ = 0.5s

Tần số f= 1/T = 2Hz

Pha ban đầu = -π/3

x(0) = 2.5cm

x(2)= 2.5cm

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