The bit of a high-speed drill accelerates from an angular speed of 2.35 x 102 rad/s to an angular speed of 5.65 x 102 rad/s. In the process, the bit turns through 275.5 Rev. assuming a constant angular acceleration, how long would it take the bit to reach its maximum speed of 9.88 x 102 rad/s, starting from 1.05 x 102 rad/s?

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**Problem Statement:**

The bit of a high-speed drill accelerates from an angular speed of \( 2.35 \times 10^{2} \) rad/s to an angular speed of \( 5.65 \times 10^{2} \) rad/s. In the process, the bit turns through 275.5 revolutions. Assuming a constant angular acceleration, how long would it take the bit to reach its maximum speed of \( 9.88 \times 10^{2} \) rad/s, starting from \( 1.05 \times 10^{2} \) rad/s?

**Explanation:**

To solve such a problem, we will use the principles of rotational kinematics. Here are the steps to consider:

1. **Identify the Given Variables:**
   - Initial angular speed (\( \omega_i \)) = \( 2.35 \times 10^{2} \) rad/s
   - Final angular speed (\( \omega_f \)) = \( 5.65 \times 10^{2} \) rad/s
   - Angular displacement (\( \theta \)) = 275.5 revolutions
   - Convert revolutions to radians: \( \theta = 275.5 \times 2\pi \) radians.

2. **Key Equations:**
   - Use the kinematic equation for angular motion:
     \[
     \omega_f^2 = \omega_i^2 + 2\alpha\theta
     \]
   - Where \( \alpha \) is the angular acceleration.

3. **Calculate Angular Acceleration:**
   - Rearrange the equation to solve for \( \alpha \):
     \[
     \alpha = \frac{\omega_f^2 - \omega_i^2}{2\theta}
     \]

4. **Find the Time Taken to Reach Maximum Speed:**
   - Maximum speed (\( \omega_{max} \)) = \( 9.88 \times 10^{2} \) rad/s
   - New initial angular speed (\( \omega'_i \)) = \( 1.05 \times 10^{2} \) rad/s
   - Using the equation:
     \[
     \omega_f = \omega'_i + \alpha t
     \]
   - Rearrange to solve for time (\( t \)):
     \[
     t = \frac{\
Transcribed Image Text:**Problem Statement:** The bit of a high-speed drill accelerates from an angular speed of \( 2.35 \times 10^{2} \) rad/s to an angular speed of \( 5.65 \times 10^{2} \) rad/s. In the process, the bit turns through 275.5 revolutions. Assuming a constant angular acceleration, how long would it take the bit to reach its maximum speed of \( 9.88 \times 10^{2} \) rad/s, starting from \( 1.05 \times 10^{2} \) rad/s? **Explanation:** To solve such a problem, we will use the principles of rotational kinematics. Here are the steps to consider: 1. **Identify the Given Variables:** - Initial angular speed (\( \omega_i \)) = \( 2.35 \times 10^{2} \) rad/s - Final angular speed (\( \omega_f \)) = \( 5.65 \times 10^{2} \) rad/s - Angular displacement (\( \theta \)) = 275.5 revolutions - Convert revolutions to radians: \( \theta = 275.5 \times 2\pi \) radians. 2. **Key Equations:** - Use the kinematic equation for angular motion: \[ \omega_f^2 = \omega_i^2 + 2\alpha\theta \] - Where \( \alpha \) is the angular acceleration. 3. **Calculate Angular Acceleration:** - Rearrange the equation to solve for \( \alpha \): \[ \alpha = \frac{\omega_f^2 - \omega_i^2}{2\theta} \] 4. **Find the Time Taken to Reach Maximum Speed:** - Maximum speed (\( \omega_{max} \)) = \( 9.88 \times 10^{2} \) rad/s - New initial angular speed (\( \omega'_i \)) = \( 1.05 \times 10^{2} \) rad/s - Using the equation: \[ \omega_f = \omega'_i + \alpha t \] - Rearrange to solve for time (\( t \)): \[ t = \frac{\
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