Concept explainers
a.
To find: the road speed (in miles per hour) at which the tire is being balanced.
a.
Answer to Problem 67E
Explanation of Solution
Given:
Length of tire
No. of revolution per minute = 480
Concept Used:
If
The circumference of the tire,
The above value is for 1 revolution but total number of revolution per minute is 480.
So, in 480 revolutions, so arc length s here is,
So, the road speed which is the linear speed is,
b.
To find: the rate at which the spin balance machine should be set so that the tire is being tested for 55 miles per hour.
b.
Answer to Problem 67E
Approximately
Explanation of Solution
Given that the tire is being tested for 55 miles per hour.
Convert it to miles per minute.
From part (a), circumference of tire is,
The required rate is,
Chapter 4 Solutions
EBK PRECALCULUS W/LIMITS
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