Answer:55.227
Step-by-step explanation:
Given data
mass
=13lb
spring stretches by
=4.5in=0.375 ft
g=![32ft/s^2](https://tex.z-dn.net/?f=32ft%2Fs%5E2)
Now Spring constant K
mg=kx
k=![\frac{13\times 32}{y}=58.667lb/ft](https://tex.z-dn.net/?f=%5Cfrac%7B13%5Ctimes%2032%7D%7By%7D%3D58.667lb%2Fft)
For critical damping ![\zeta =1](https://tex.z-dn.net/?f=%5Czeta%20%3D1)
![2\times \zeta \times \omega_n =\frac{c}{m}](https://tex.z-dn.net/?f=2%5Ctimes%20%5Czeta%20%5Ctimes%20%5Comega_n%20%3D%5Cfrac%7Bc%7D%7Bm%7D)
and ![\omega_n=\sqrt {\frac{k}{m}}](https://tex.z-dn.net/?f=%5Comega_n%3D%5Csqrt%20%7B%5Cfrac%7Bk%7D%7Bm%7D%7D)
![\omega _n=2.1241rad/s](https://tex.z-dn.net/?f=%5Comega%20_n%3D2.1241rad%2Fs)
substituting values
![2\times 1 \times 2.124 =\frac{c}{m}](https://tex.z-dn.net/?f=2%5Ctimes%201%20%5Ctimes%202.124%20%3D%5Cfrac%7Bc%7D%7Bm%7D)
c=55.227 lb.sec/ft
Answer:
Hi there!
The correct answer to this question is: The <u>surface area</u> of the prism is 456 cm^2. The <u>volume</u> of the prism is 408 cm^2
Answer:
Una secadora de cabello tiene una resistencia de 10Ω al circular una corriente de 6 Amperes, si está conectado a una diferencia de potencial de 120 V, durante 18 minutos ¿Qué cantidad de calor produce?, expresado en calorías