Concept explainers
How far is the position from the rim of the crankshaft after 0.01 second, if the crankshaft rotates 20 revolutions per second and P is at the horizontal position when it begins to rotate?
Answer to Problem 38E
10.8 cm
Explanation of Solution
Given information: Mechanics: The blades of a power lawn mower are rotated by a two-stroke engine with a piston sliding back and forth in the engine cylinder. As the piston moves back and forth, the connecting rod rotates the circular crankshaft. Suppose the crankshaft is 5 centimeters long and the connecting rod is 15 centimeters.
Calculation:
P turns
The angle (at O) after 0.01 second equals
Using the triangle (and the Law of Sines), we find the angles at Q and P
We are looking to find QO, then subtract the radius,
Chapter 5 Solutions
Advanced Mathematical Concepts: Precalculus with Applications, Student Edition
Additional Math Textbook Solutions
Single Variable Calculus: Early Transcendentals (2nd Edition) - Standalone book
Thomas' Calculus: Early Transcendentals (14th Edition)
Calculus: Early Transcendentals (3rd Edition)
Calculus: Early Transcendentals (2nd Edition)
University Calculus: Early Transcendentals (3rd Edition)
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