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2. A disk that is 3 m in radius spins at the rate of 4 revolutions per second and over a period of 10 sec comes to rest at a constant angular acceleration. c. What is its angular acceleration? 251 d. What is the linear velocity at the edge of the disk after 5 sec 7.53 LIT radren/gee

2. A disk that is 3 m in radius spins at the rate of 4 revolutions per second and over a period of 10 sec comes to rest at a constant angular acceleration. c. What is its angular acceleration? 251 d. What is the linear velocity at the edge of the disk after 5 sec 7.53 LIT radren/gee

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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The text in the image contains two physics problems related to rotational motion and a ballistic pendulum. --- **Problem 2:** A disk that is 3 m in radius spins at the rate of 4 revolutions per second and over a period of 10 seconds comes to rest at a constant angular acceleration. **Questions:** c. What is its angular acceleration? d. What is the linear velocity at the edge of the disk after 5 seconds? **Notes:** - There are calculations done on the notes: - For c, the angular acceleration is noted as approximately 2.5. - For d, the linear velocity is recorded as 7.53 with a comment that relates to 4π radians/second. --- **Additional Problem Description (Ballistic Pendulum):** A bullet with mass \( m \) hits a ballistic pendulum with length \( L \) and mass \( M \) and lodges in it. When the bullet hits the pendulum, it swings up from the equilibrium position and reaches an angle \( \alpha \) at its maximum. **Given:** - \( m = 22 \, g \) - \( M = 4 \, kg \) - \( L = 2 \, m \) - \( \alpha = 7 \, deg \) **Questions:** a. What is the final height above equilibrium? **Diagram:** - The image also includes a partial diagram related to the ballistic pendulum problem, showing a pendulum with an angle indicator.
Transcribed Image Text:The text in the image contains two physics problems related to rotational motion and a ballistic pendulum. --- **Problem 2:** A disk that is 3 m in radius spins at the rate of 4 revolutions per second and over a period of 10 seconds comes to rest at a constant angular acceleration. **Questions:** c. What is its angular acceleration? d. What is the linear velocity at the edge of the disk after 5 seconds? **Notes:** - There are calculations done on the notes: - For c, the angular acceleration is noted as approximately 2.5. - For d, the linear velocity is recorded as 7.53 with a comment that relates to 4π radians/second. --- **Additional Problem Description (Ballistic Pendulum):** A bullet with mass \( m \) hits a ballistic pendulum with length \( L \) and mass \( M \) and lodges in it. When the bullet hits the pendulum, it swings up from the equilibrium position and reaches an angle \( \alpha \) at its maximum. **Given:** - \( m = 22 \, g \) - \( M = 4 \, kg \) - \( L = 2 \, m \) - \( \alpha = 7 \, deg \) **Questions:** a. What is the final height above equilibrium? **Diagram:** - The image also includes a partial diagram related to the ballistic pendulum problem, showing a pendulum with an angle indicator.
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