Physics, 26.12.2019 23:31 StupidFatChipmunk
Una mujer esta segando su prado con segadora eléctrica cuya cuchilla gira a 1500rpm. la mujer encuentra una zona de hierba alta e incrementa la celeridad a 2000rpm durante un intervalo de 3.40s con una aceleración angular constante. cuál es la aceleración angular? .2 cuántas revoluciónes ha realizado la cuchilla mientras estaba acelerando?
Answers: 3
![w=w_{0} + \alpha *t\\Donde:\\w=2000 [\frac{rev}{min}]*[\frac{1min}{60s} ] *[\frac{2\pi rad}{1 rev} ]=209.4[\frac{rad}{s} ]\\w_{0} =1500 [\frac{rev}{min}]*[\frac{1min}{60s} ] *[\frac{2\pi rad}{1 rev} ]=157.1[\frac{rad}{s} ]\\t=3.4[s]\\reemplazando:\\209.4-157.1=\alpha *(3.4)\\\\alpha =15.4[\frac{rad}{s^{2} } ]](/tpl/images/0434/1333/95643.png)
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Una mujer esta segando su prado con segadora eléctrica cuya cuchilla gira a 1500rpm. la mujer encuen...
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