duongthithuhuong2004 duongthithuhuong2004

03-11-2021
Physics

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Câu 1. Một con lắc lò xo gồm vật nặng 200g và lò xo có độ cứng k = 200N/m. Kích thích cho con lắc dao động điều hòa với biên độ 6cm. Tính tần số góc và cơ năng dao động điều hòa của con lắc đó.

Respuesta :

doangiaphuc doangiaphuc

03-11-2021

w=căn(k/m)=1
cơ năng W=1/2KA^2=1/2x200x(0,06)^2=0,36
6cm=0,06m

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