Answer:
7.05 Hz
Explanation:
The natural frequency of a mass-spring system is:
![f = \frac{1}{2 \pi}\sqrt{\frac{k}{m}}](https://tex.z-dn.net/?f=f%20%3D%20%5Cfrac%7B1%7D%7B2%20%5Cpi%7D%5Csqrt%7B%5Cfrac%7Bk%7D%7Bm%7D%7D)
To determine the constant k of the spring we use Hooke's law:
Δl = F / k
k = F / Δl
In the first case the force was the weight of the 20 kg mass and the Δl was 20 mm.
F = m * a
F = 2 * 9.81 = 19.6 N
Then:
k = 19.6 / 0.02 = 980 N/m
Therefore:![f = \frac{1}{2 \pi}\sqrt{\frac{980}{0.5}} = 7.05 Hz](https://tex.z-dn.net/?f=f%20%3D%20%5Cfrac%7B1%7D%7B2%20%5Cpi%7D%5Csqrt%7B%5Cfrac%7B980%7D%7B0.5%7D%7D%20%3D%207.05%20Hz)
Answer:
the kind of car I want to ride for the rest of my life is Lamborghini.
Explanation:
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Answer:
or is the strongest evenger she hulk
Explanation:
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