An open cylindrical vessel, having its axis vertical, is 100 mm diameter and 150 mm deep and is exactly two-thirds full of water. If the vessel is rotated about its axis, determine at what steady angular velocity the
An open cylindrical vessel, having its axis vertical, is 100 mm diameter and 150 mm deep and is exactly two-thirds full of water. If the vessel is rotated about its axis, determine at what steady angular velocity the
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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
Transcribed Image Text:**Problem Statement:**
An open cylindrical vessel, having its axis vertical, is 100 mm in diameter and 150 mm deep and is exactly two-thirds full of water. If the vessel is rotated about its axis, determine at what steady angular velocity the water would just reach the rim of the vessel.
---
In this problem, we need to calculate the angular velocity required for the water in a rotating cylindrical vessel to reach the rim. The key parameters given are:
- Diameter of the vessel: 100 mm
- Depth of the vessel: 150 mm
- Vessel filled to two-thirds of its height with water
The task involves understanding the relationship between the centripetal force created by rotation and the height the water reaches. It's a classical problem involving centripetal acceleration, fluid dynamics, and rotational motion.
**Analysis Approach:**
1. **Calculate the Initial Height of Water:**
- Initial water height = (2/3) * 150 mm
2. **Understand the Effect of Rotation:**
- As the vessel rotates, the water will rise along the sides.
- The water reaches the maximum height at the rim of the vessel when rotational forces balance gravitational forces.
3. **Use Physics Principles:**
- Apply the concepts of angular velocity and centripetal force.
- Use the formula for centripetal acceleration and equate it to gravitational force to find the desired angular velocity.
By solving these physics-based equations, students can determine at what angular velocity the water will just reach the rim without spilling over. This setup provides a practical understanding of rotational dynamics and fluid behavior.
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