Resultados Práctico 6
Ej 1 |
a) ![432 J 432 J](https://eva.fing.edu.uy/filter/tex/pix.php/dbe5d7194fc3a3212aa4c63a6adf57bb.png)
b) ![-400 J -400 J](https://eva.fing.edu.uy/filter/tex/pix.php/d754a2f4128c40309af01b87e7cf7128.png)
c) ![0 J 0 J](https://eva.fing.edu.uy/filter/tex/pix.php/ecd91e196ecf3d6a4f3995e2f7e58d95.png)
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Ej 2 |
![v_H = 2,41 \frac{m}{s} v_H = 2,41 \frac{m}{s}](https://eva.fing.edu.uy/filter/tex/pix.php/a4cae8cc13df7e97acbd959382b0075a.png)
![v_N = 4,83 \frac{m}{s} v_N = 4,83 \frac{m}{s}](https://eva.fing.edu.uy/filter/tex/pix.php/5816dbf94d7553f75bf331e5695d82e3.png)
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Ej 3 |
a) ; ![W_R = -\frac{k\Delta l^2}{2} W_R = -\frac{k\Delta l^2}{2}](https://eva.fing.edu.uy/filter/tex/pix.php/5194d6ace4c7e323f4568a5eb95fbeea.png)
b) ![v_{0} = \sqrt{\frac{k\Delta l^{2}}{m}-2g\Delta l} v_{0} = \sqrt{\frac{k\Delta l^{2}}{m}-2g\Delta l}](https://eva.fing.edu.uy/filter/tex/pix.php/50faf6bf82c018ea14edd23cea367f5b.png)
c) ![H = 0,56 m H = 0,56 m](https://eva.fing.edu.uy/filter/tex/pix.php/c52a65d316ad42527a7d3a542ff50a2f.png)
d) ![\Delta l^{\prime} = 22,5 cm \Delta l^{\prime} = 22,5 cm](https://eva.fing.edu.uy/filter/tex/pix.php/a2d3b33e2af1deb4015882f1a82dd395.png)
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Ej 4 |
a) ![W = (P_P+P_L)h W = (P_P+P_L)h](https://eva.fing.edu.uy/filter/tex/pix.php/29ae37b476b0442ccf6f6849da80f480.png)
b) ![F_{min} = \frac{P_P+P_L}{4} F_{min} = \frac{P_P+P_L}{4}](https://eva.fing.edu.uy/filter/tex/pix.php/403c20ef5604c3480c2f2efffa42f242.png)
c) ![4h 4h](https://eva.fing.edu.uy/filter/tex/pix.php/936446dfd48b33e71d8cd7619cc72256.png)
d) ![W=(P_P+P_L)h W=(P_P+P_L)h](https://eva.fing.edu.uy/filter/tex/pix.php/53649f0d397237394c45ed459a653231.png)
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Ej 5 |
![W_{neto} = 0 J W_{neto} = 0 J](https://eva.fing.edu.uy/filter/tex/pix.php/6dfdd492a264b711916da08cf66cada6.png)
![P=\vec{F}.\vec{v}=mg(\mu cos\alpha + sen\alpha)v=16,6 kW P=\vec{F}.\vec{v}=mg(\mu cos\alpha + sen\alpha)v=16,6 kW](https://eva.fing.edu.uy/filter/tex/pix.php/b3a1e5fa9f3a78761f34dcb7bf6b75f4.png)
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Ej 6 |
b) ![P(t) = \frac{d W}{d t}=m\frac{v_f^2}{t_f^2}t P(t) = \frac{d W}{d t}=m\frac{v_f^2}{t_f^2}t](https://eva.fing.edu.uy/filter/tex/pix.php/54fe2837f4d408e8b7df873c96f6f92a.png)
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Ej 7 |
![P_G=673MW P_G=673MW](https://eva.fing.edu.uy/filter/tex/pix.php/a01b5fda5cf2b4c04ba197e41d073177.png)
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Ej 8 |
![W_{min}=\frac{7}{4}mgh W_{min}=\frac{7}{4}mgh](https://eva.fing.edu.uy/filter/tex/pix.php/564bf22ff82cd88dd523d94c9a25aeb1.png)
![h^{\prime}_{max} = \frac{h}{4} h^{\prime}_{max} = \frac{h}{4}](https://eva.fing.edu.uy/filter/tex/pix.php/a7f6718a96537d502ccf2623c533cb6e.png)
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Ej 9 |
De acuerdo al teorema del trabajo y la energía: ![W_{A\rightarrow B}^{F}=-W_{A\rightarrow B}^{mg}=mgL(1-cos\theta_f) W_{A\rightarrow B}^{F}=-W_{A\rightarrow B}^{mg}=mgL(1-cos\theta_f)](https://eva.fing.edu.uy/filter/tex/pix.php/1ab5992792bacccde6c2c9dd0812feef.png)
(Observación: Este resultado coincide con la variación de la energía potencial gravitatoria de la masa)
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Última modificación: viernes, 16 de abril de 2021, 21:29