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3 years ago

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Một xe nặng 1200kg trượt ngang với tốc độ 66km/h tới va vào một lò xò làm cho lò xò nắn lại một đoạn là 2,2m.Tính hằng số của lò

xò( còn gọi là đọ cứng)

1 answer:

liberstina [14]3 years ago

4 0

Answer:

Explanation:

66 km/hr = 18.3 m/s

½mv² = ½kx²

k = mv²/x² = 1200(18.3²)/2.2² = 83,333 = 83 kN/m

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