30. Water wheels are still used to power lumber mills in many historic regions. A typical water wheel has a diameter of 5 m and makes one complete revolution every 90 seconds. A particular paddle on a water wheel reaches a maximum height of 4m above the water when a timing mechanism reads 20 seconds. Sketch two complete cycles of this sinusoid. a. Write an equation, h(t), expressing the height of the paddle in terms of t. b. What is the radius of the water wheel? c. Find, to the nearest tenth, the height of the paddle when t = 30 seconds. d. Find, to the nearest tenth, the first three times the paddle is at a height of 1 meter above the water.
30. Water wheels are still used to power lumber mills in many historic regions. A typical water wheel has a diameter of 5 m and makes one complete revolution every 90 seconds. A particular paddle on a water wheel reaches a maximum height of 4m above the water when a timing mechanism reads 20 seconds. Sketch two complete cycles of this sinusoid. a. Write an equation, h(t), expressing the height of the paddle in terms of t. b. What is the radius of the water wheel? c. Find, to the nearest tenth, the height of the paddle when t = 30 seconds. d. Find, to the nearest tenth, the first three times the paddle is at a height of 1 meter above the water.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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The graph should depict a sinusoidal wave with the period adjusted to match the information provided. The vertical axis represents the height above the water, and the horizontal axis represents time in seconds.
2. **Questions**:
a. **Equation**:
- Write an equation, \( h(t) \), expressing the height of the paddle in terms of \( t \).
b. **Radius of Water Wheel**:
- What is the radius of the water wheel?
c. **Paddle Height at \( t = 30 \) seconds**:
- Find, to the nearest tenth, the height of the paddle when \( t = 30 \) seconds.
d. **Timing Mechanism**:
- Find, to the nearest tenth, the first three times the paddle is at a height of 1 meter above the water.
#### Detailed Explanation of Graphs/Diagrams:
- The graph for this problem will be a sine wave that starts at the maximum height (4 meters) at \( t = 20 \) seconds.
- It will have a period of 90 seconds.
- The amplitude (half of the diameter, since the diameter is 5 meters) will be 2.5 meters.
- The vertical shift should be adjusted to 2.5 meters to match the maximum height data point.
This problem combines concepts of trigonometric functions and real-world applications involving periodic motion, illustrating the practical use of mathematics in engineering and physics.
---
This text will guide students in understanding the relationship between trigonometric functions and periodic real-world phenomena like water wheels. It prompts them to translate physical characteristics into mathematical equations and vice versa.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd093261f-0249-4090-9fb8-baf1006688f1%2Fa150b75c-b7b8-4962-8d7a-56917bdd21ab%2Fckaaxo_processed.jpeg&w=3840&q=75)
Transcribed Image Text:### Trigonometric Functions and Water Wheels
#### Problem 29:
Write a secant function with the same attributes as the function in the graph shown above.
#### Problem 30:
*You may use a calculator for this problem.*
Water wheels are still used to power lumber mills in many historic regions. A typical water wheel has a diameter of 5 meters and makes one complete revolution every 90 seconds. A particular paddle on the water wheel reaches a maximum height of 4 meters above the water when a timing mechanism reads 20 seconds.
1. **Sketch**:
- Sketch two complete cycles of this sinusoid.

The graph should depict a sinusoidal wave with the period adjusted to match the information provided. The vertical axis represents the height above the water, and the horizontal axis represents time in seconds.
2. **Questions**:
a. **Equation**:
- Write an equation, \( h(t) \), expressing the height of the paddle in terms of \( t \).
b. **Radius of Water Wheel**:
- What is the radius of the water wheel?
c. **Paddle Height at \( t = 30 \) seconds**:
- Find, to the nearest tenth, the height of the paddle when \( t = 30 \) seconds.
d. **Timing Mechanism**:
- Find, to the nearest tenth, the first three times the paddle is at a height of 1 meter above the water.
#### Detailed Explanation of Graphs/Diagrams:
- The graph for this problem will be a sine wave that starts at the maximum height (4 meters) at \( t = 20 \) seconds.
- It will have a period of 90 seconds.
- The amplitude (half of the diameter, since the diameter is 5 meters) will be 2.5 meters.
- The vertical shift should be adjusted to 2.5 meters to match the maximum height data point.
This problem combines concepts of trigonometric functions and real-world applications involving periodic motion, illustrating the practical use of mathematics in engineering and physics.
---
This text will guide students in understanding the relationship between trigonometric functions and periodic real-world phenomena like water wheels. It prompts them to translate physical characteristics into mathematical equations and vice versa.
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