A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is rotating at 9.80 rev/s; 80.0 revolutions later, its angular speed is 18.0 rev/s. Calculate (a) the angular acceleration (rev/s2), (b) the time required to complete the 80.0 revolutions, (c) the time required to reach the 9.80 rev/s angular speed, and (d) the number of revolutions from rest until the time the disk reaches the 9.80 rev/s angular speed.
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Ответ:
Part (a) - 1.42 rev/s
Part (b) - 5.78s
Part (c) - 6.90s
Part (d) - 33.81 rev
Explanation:
The solution to this problem requires the knowledge of constant angular acceleration motion. The equations used here are similar to those used in constant linear acceleration motion. The detailed solutio is presented in the attachment below.
Ответ:
Energía cinética.
Explicación:
La energía cinética es un tipo de energía que se utiliza para hacer girar la turbina. La energía cinética que está presente en el fluido o el viento obliga a girar la turbina que convierte esta energía y conduce a la generación de energía eléctrica. Cuando el viento o el fluido en movimiento toca las palas de la turbina, provoca la rotación de la turbina y, debido a esta rotación, los generadores conectados a la turbina también inician un movimiento que produce energía eléctrica.