Resultados Práctico 9
Ej 1 |
![\omega(t)=at^4-bt^3+\omega_0 \omega(t)=at^4-bt^3+\omega_0](https://eva.fing.edu.uy/filter/tex/pix.php/2a2f39baed55d7c443ae74e9b123e056.png)
![\theta(t)=\frac{a}{5}t^5-\frac{b}{4}t^4+\omega_0t+\theta_0 \theta(t)=\frac{a}{5}t^5-\frac{b}{4}t^4+\omega_0t+\theta_0](https://eva.fing.edu.uy/filter/tex/pix.php/2c7127adc9aedf96070120af2dea137f.png)
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Ej 2 |
![v_\text{min}=8fL=4.8 \text{ m/s} v_\text{min}=8fL=4.8 \text{ m/s}](https://eva.fing.edu.uy/filter/tex/pix.php/00fdda4990ff7fe1d6da78627d6cfedb.png)
El resultado es independiente de la distancia al eje.
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Ej 3 |
a) ![\theta^*=\frac{L}{R}=138.3 \text{ rad} \theta^*=\frac{L}{R}=138.3 \text{ rad}](https://eva.fing.edu.uy/filter/tex/pix.php/815b237af3c9116bcb9df958b2327ddc.png)
b) ![t^*=\sqrt{\frac{2\theta^*}{\alpha}}=13.7 \text{ s} t^*=\sqrt{\frac{2\theta^*}{\alpha}}=13.7 \text{ s}](https://eva.fing.edu.uy/filter/tex/pix.php/17102152ac5dccc7aaf3e3d72d8cb177.png)
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Ej 4 |
![t_B^*=\frac{2\pi f_B r_B}{\alpha_A r_A}=16.4 \text{ s} t_B^*=\frac{2\pi f_B r_B}{\alpha_A r_A}=16.4 \text{ s}](https://eva.fing.edu.uy/filter/tex/pix.php/e61843f8ec3f55b35f5ff636f0f4ea41.png)
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Ej 5 |
Considerando un versor saliente:
![\vec{\tau}=32.9 \text{ Nm } \hat{k} \vec{\tau}=32.9 \text{ Nm } \hat{k}](https://eva.fing.edu.uy/filter/tex/pix.php/883be2e844bd00b038b3d14afd7381ec.png)
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Ej 6 |
![\omega=690 \text{ rad/s} \omega=690 \text{ rad/s}](https://eva.fing.edu.uy/filter/tex/pix.php/b2a3237f707d379c95d3807e7d43d453.png)
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Ej 7 |
![\bar{P}=-\frac{MR^2}{\Delta t}2\pi^2f^2=-1364 \text{ W} \bar{P}=-\frac{MR^2}{\Delta t}2\pi^2f^2=-1364 \text{ W}](https://eva.fing.edu.uy/filter/tex/pix.php/182d5abb1ce0022bc9e677614f7f03f5.png)
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Ej 8 |
a) ![\alpha=-\frac{\omega_0}{\Delta t} \alpha=-\frac{\omega_0}{\Delta t}](https://eva.fing.edu.uy/filter/tex/pix.php/e482639e1cba5261fc906f8da9a62bd4.png)
b) ![\tau=-\frac{\omega_0 L^2}{4\Delta t}\Big(\frac{M}{3}+2m\Big) \tau=-\frac{\omega_0 L^2}{4\Delta t}\Big(\frac{M}{3}+2m\Big)](https://eva.fing.edu.uy/filter/tex/pix.php/d352e2563dd1cba435a511fc6a6a323a.png)
c) ![E_\text{dis}=\frac{\omega_0^2 L^2}{8}\Big(\frac{M}{3}+2m\Big) E_\text{dis}=\frac{\omega_0^2 L^2}{8}\Big(\frac{M}{3}+2m\Big)](https://eva.fing.edu.uy/filter/tex/pix.php/2cd38c3e21ce68932ce3f684d423a8e2.png)
d) Nro. de revoluciones: ![\frac{\omega_0 \Delta t}{4\pi} \frac{\omega_0 \Delta t}{4\pi}](https://eva.fing.edu.uy/filter/tex/pix.php/5642031e33a7ca29df37eb16c3a37599.png)
e) ; ; ; ![624 \text{ vueltas} 624 \text{ vueltas}](https://eva.fing.edu.uy/filter/tex/pix.php/2b589321172f7710eb1cbf017539d522.png)
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Ej 9 |
![\text{Nro. vueltas} = \frac{R_1 R_3 \alpha_1 t^2}{4\pi R_2 R_4} = 358 \text{Nro. vueltas} = \frac{R_1 R_3 \alpha_1 t^2}{4\pi R_2 R_4} = 358](https://eva.fing.edu.uy/filter/tex/pix.php/953a451004aac9e7446faa120acfec62.png)
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Última modificación: miércoles, 2 de junio de 2021, 19:08