Concept explainers
To Calculate: Rotation speed of beam of lighthouse.
Answer to Problem 91RE
The required rotation speed is
Explanation of Solution
Given information:
lighthouse has dual beam (opposite to each other).
Ship observes blinking light after 5 second.
Formula used:
Angular velocity or rotation speed of any object doing circular motion is given by
As lighthouse has dual beam (opposite to each other), So the lighthouse will rotate
As we know,
A Ship observe blink after 5 second.
The required rotation speed is
Chapter 6 Solutions
Precalculus
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